SlideShare a Scribd company logo
BLOOD SUPPLY OF BRAIN
PRESENTER: DR PAWAN KUMAR
DR R M L & PGIMER, DELHI
-15% of the cardiac output
-25% of the total oxygen.
-Cerebral blood flow is approximately 50 ml/g/min.
-Supplied by two internal carotid arteries and two
vertebral arteries.
AORTIC ARCH
1.Innominate artery (IA) /
Brachiocephalic trunk
-Rt subclavian artery (SCA)-
Right vertebral artery
-Rt common carotid artery
(CCA)
2.Left Common Carotid Artery (CCA)
3.Left Subclavian Artery (SCA)- Left
Vertebral Artery (VA)
Major Arteries
1.INTERNAL CAROTID-
-ARCH OF AORTA-INTERNAL +EXTERNAL
CAROTID AT SUPERIOR BORDER OF
THYROID CARTILAGE
-ENTER THE BRAIN-CAROTID CANAL
2. VERTEBRAL ARTETIS
-FROM 1st PART OF SUBCLAVIAN ARTERY.
-TRAVERSE FROM C6 TO C1 –FORAMAN
MAGNUM
-UNITES TO FORM BASILAR ARTERY AT THE
LOWER BORDER OF THE PONS.

Recommended for you

Anatomy of pons
Anatomy of ponsAnatomy of pons
Anatomy of pons

The pons lies between the medulla oblongata and midbrain, connecting them. It contains motor and sensory nuclei for cranial nerves 5-8 and helps transmit signals between the cerebellum and cerebral cortex. The pons has anterior and posterior surfaces and contains fibers, nuclei, and tracts that process sensory information and coordinate motor functions. Damage to different areas can cause deficits like hemiplegia, hearing loss, or facial paralysis.

Blood supply of the brain, neuro anatomy .
Blood supply of the brain, neuro anatomy .Blood supply of the brain, neuro anatomy .
Blood supply of the brain, neuro anatomy .

The two main arteries supplying the brain are the internal carotid arteries and vertebral arteries. Within the skull, these arteries and their branches form a circle of connected blood vessels called the Circle of Willis. The Circle of Willis supplies different regions of the brain and helps ensure adequate blood flow if one artery is blocked. Strokes occur when blood flow to the brain is disrupted, such as from a blood clot blocking an artery.

Corticospinal tract (Pyramidal tract)
Corticospinal tract (Pyramidal tract)Corticospinal tract (Pyramidal tract)
Corticospinal tract (Pyramidal tract)

here i am to explain the Anatomy and physiology of part of the Pyramidal tract, that is the corticospinal tract. I also added the clinical significance of corticospinal tract. The course of the corticospinal tract are well explained.

anatomyapplied anatomyneurology
INTERNAL CAROTID ARTERY
• Four segments:
– Cervical
– Petrous
– Cavernous
– Cerebral / Supraclinoid
• Branches
– Meningohypophyseal trunk
– Ophthalmic artery (OA)
– Superior hypophyseal artery
– Posterior communicating artery (PComA)
– Anterior choroidal artery (AChA)
– Anterior cerebral artery (ACA)
– Middle cerebral artery (MCA) (continuation of
the ICA)
– Cervical segment
– From the bifurcation of CCA
– Extends to the entrance into
the carotid foramen of the
petrous temporal bone
– No branches
-Petrous Segment
-Extends from base of skull to
the petrous apex
-Ascending , Genu, Horizontal
-Enters cranial vault via foramen
lacerum.
-Branches - Carotico tympanic A
& A of pterygoid canal
Cavernous Segment
-Passes through cavernous sinus with
Abducens Nerve
-Cavernous branches-trigeminal ganglion
-Branches supply posterior pituitary
(Meningohypophyseal Artery)

Recommended for you

Blood supply-of-brain
Blood supply-of-brainBlood supply-of-brain
Blood supply-of-brain

The brain is divided into several main regions that each have distinct functions. The brainstem regulates basic functions like breathing and heart rate. The cerebellum controls coordination and balance. The limbic system is involved in emotions, drives, and memory formation. The cerebral cortex is the ultimate control center and processes information. Within the cortex, different lobes are specialized for functions like speech, vision, hearing, and movement. The brain receives blood supply from internal and external carotid arteries which anastomose to provide redundancy.

Blood supply of brain
Blood supply of brainBlood supply of brain
Blood supply of brain

The brain receives its blood supply from two internal carotid arteries and two vertebral arteries. These vessels anastomose to form the circle of Willis at the base of the brain. The internal carotid artery gives off branches that supply the anterior circulation, including the anterior cerebral artery and middle cerebral artery. The vertebral arteries join to form the basilar artery, which supplies the posterior circulation via branches such as the posterior cerebral artery. Various arteries anastomose to provide collateral circulation. Venous drainage involves superficial and deep veins that drain primarily into the dural venous sinuses.

Posterior cerebral circulation - Gross Anatomy
Posterior cerebral circulation - Gross AnatomyPosterior cerebral circulation - Gross Anatomy
Posterior cerebral circulation - Gross Anatomy

This document summarizes the posterior circulation of the brain. It describes how the vertebral arteries join to form the basilar artery in the brainstem. The basilar artery then divides into the two posterior cerebral arteries. Key branches include the posterior inferior cerebellar artery and superior cerebellar artery. The posterior cerebral arteries supply blood to the occipital and temporal lobes. The vertebrobasilar system provides blood to the brainstem, cerebellum, and posterior portions of the telencephalon.

brainposterior circulationcerebral
- Cerebral part
Begins after penetration of dura,
continues until bifurcation into
ACA & MCA
3 Branches:
1.Ophthalmic A
2.Posterior Communicating A
3.Anterior Choroidal A-
-ends in the choroid plexus.
-crus cerebri, the lateral geniculate
body, the optic tract, and the internal
capsule).
Ophthalmic artery
 1st intradural branch of ICA
 Supplies globe, orbit,frontal and
ethmoidal sinuses, & frontal scalp
 Central retinal A, Long & Short posterior
ciliary branches
 Branches of Ophthalmic A anastamose
with Maxillary A branches - potential for
collateral flow in cases of proximal
carotid occlusion
Vertebral artery
• V1: (extraosseous-origin to
c6): Segmental cervical
muscular and spinal branches -
• V2( foraminal- C6 TO C1):
: meningeal/muscular/spinal
branches
• V3 (extraspinal-C1-
dura): Posterior meningeal
artery
• V4: (intradural)
– Anterior and sometimes posterior
spinal arteries
– Perforating branches to medulla
– PICA: gives off perforating
medullary, choroid, tonsillar,
cerebellar branches
BASILAR ARTERY
1.The pontine arteries
2. The labyrinthine
-the internal ear.
- often arises as a branch of the anterior inferior cerebellar artery.
3. The anterior inferior cerebellar artery
the anterior and inferior parts of the cerebellum .
A few branches pass to the pons and the upper part of the medulla oblongata.
4. The superior cerebellar artery arises close to the termination of the basilar
artery
the superior surface of the cerebellum, pons, the pineal gland, and the
superior medullary velum, tela chorde of third ventricle.
5.The posterior cerebral (in interpeduncular cistern)

Recommended for you

Blood supply of brain
Blood supply of brainBlood supply of brain
Blood supply of brain

Blood supply of brain, only arterial anatomy presented at National Institute of Neurosciences as weekly Anatomy session presentation

neuroanatomybrainvascular
Cerebellum
CerebellumCerebellum
Cerebellum

The document discusses the anatomy and functions of the cerebellum. It begins by outlining the embryonic development and subdivision of the nervous system. It then describes the three functionally distinct regions of the cerebellum - the vestibulocerebellum, spinocerebellum, and cerebrocerebellum - and their different inputs and outputs. The document also discusses the cerebellar peduncles, cortex, and nuclei. It outlines the roles of the cerebellum in motor control and coordination and describes clinical signs of cerebellar dysfunction such as ataxia.

ICA anatomy
ICA anatomyICA anatomy
ICA anatomy

The internal carotid artery has 7 segments from its origin to termination. The cervical segment passes through the carotid sheath alongside nerves before entering the carotid canal in the petrous bone. The petrous segment loops within the temporal bone. The lacerum segment passes over the foramen lacerum. The cavernous segment passes through the cavernous sinus. The clinoid and ophthalmic segments are intradural before the communicating segment joins the anterior and middle cerebral arteries. The carotid siphon refers to the cavernous and intracranial portions that form an S-shape.

Blood supply of the brain
CIRCLE OF WILLIS
-In the interpeduncular fossa at the base of the brain.
- It is formed by the anastomosis between the two internal
carotid arteries and the two vertebral arteries
perforating arteries from the circle of
Willis or from vessels near
• four principal groups
1.anteromedial group-the optic chiasma; lamina terminalis;
anteriorpreoptic and supraoptic areas of the hypothalamus;
septum pellucidum; paraolfactory areas; anterior columns of
the fornix; cingulate gyrus; rostrum of the corpus callosum;
anterior part of the putamen and head of the caudate
nucleus.
2-The posteromedial group-the hypothalamus and pituitary and
the anterior and medial parts of the thalamus via
thalamoperforating arteries ,the mammillary bodies,
subthalamus, lateral wall of the third ventricle, the medial
thalamus, and globus pallidus.
3-The anterolateral group (lenticulostriate arteries)-posterior
striatum, lateral globus pallidus and internal capsule.
4-The posterolateral -the cerebral peduncle, colliculi, pineal
gland and posterior thalamus and medial geniculate body.

Recommended for you

Anatomy of medulla oblongata
Anatomy of medulla oblongataAnatomy of medulla oblongata
Anatomy of medulla oblongata

The medulla oblongata connects the pons superiorly to the spinal cord inferiorly. It has important cranial nerve nuclei and tracts that control vital functions like breathing and heart rate. A key feature is the decussation of the pyramids, where most corticospinal fibers cross to the opposite side. The medulla also contains nuclei that relay proprioceptive and fine touch sensations from the body to the brain.

Corpus callosum with disconnection syndromes
Corpus callosum with disconnection syndromes Corpus callosum with disconnection syndromes
Corpus callosum with disconnection syndromes

This document discusses the anatomy and functions of the corpus callosum. It describes the corpus callosum as the wide bundle of neural fibers beneath the cortex that connects the left and right cerebral hemispheres. It summarizes that the corpus callosum is divided into five regions - the splenium, body, genu, rostrum, and isthmus. It also briefly discusses the blood supply, development, and functions of the different regions of the corpus callosum.

Internal capsule
Internal capsuleInternal capsule
Internal capsule

The internal capsule is a compact bundle of fibers that connects different regions of the brain. It has three parts - the anterior limb, genu, and posterior limb. It contains association fibers connecting different cortical regions, projection fibers connecting the cortex to other gray matter structures, and commissural fibers connecting the left and right hemispheres. The internal capsule receives its blood supply from the lateral striate branches of the middle cerebral artery, medial striate branches of the anterior cerebral artery, and the anterior choroidal artery from the internal carotid artery.

Blood supply of the brain
Anterior cerebral Artery
Three segments:
 A1 –Pre communicating
segment
 Medial lenticulostriate
branches
 A2-Post communicating
segment
 Recurrent artery of
Heubner
 Orbitofrontal
 Frontopolar
 A3- distal ACA / cortical
branches
 Pericallosal
 Callosomarginal
ACA Supply
The cortical branches.
-Two or three orbital branches supply the olfactory cortex, gyrus rectus and medial
orbital gyrus.
-Frontal branches supply the corpus callosum, cingulate gyrus, medial frontal
gyrus and paracentral lobule.
- Parietal branches supply the precuneus
- the frontal and parietal supply a strip of territory on the superolateral surface that
represent the lower limb.
CENTRAL BRANCHES:
-they supply the rostrum of the corpus callosum, the septum pellucidum, the anterior
part of the putamen, the head of the caudate nucleus and adjacent parts of the
internal capsule
Blood supply of the brain

Recommended for you

Blood supply of the brain
Blood supply of the brainBlood supply of the brain
Blood supply of the brain

The document discusses the blood supply of the brain. It notes that the brain requires continuous oxygenated blood flow. There are two main arterial systems that supply the brain - the carotid system and vertebrobasilar system. The carotid system includes the internal carotid arteries which provide around 80% of the brain's blood supply. The vertebrobasilar system includes the vertebral arteries which join to form the basilar artery and provides the remaining 20% of blood supply. These two systems anastomose to form the cerebral arterial circle, also known as the Circle of Willis, at the base of the brain.

circle of willisinternal carotid arteryvertebral artery
Cisterns of brain
Cisterns of brainCisterns of brain
Cisterns of brain

The document summarizes the anatomy and contents of various brain cisterns. It describes the locations and structures contained within several major cisterns, including: 1) The cisterna magna, which contains the cerebellar medullary veins and lower cranial nerves. 2) The interpeduncular cistern, which is divided by membranes and contains the basilar artery, posterior cerebral arteries, and cranial nerves 3 and 6. 3) The ambient cistern, which surrounds the midbrain and contains the posterior cerebral artery and cranial nerve 4. 4) The suprasellar/chiasmatic cistern, located above the pituitary fossa,

csfinterpeduncularpontine
Third ventricle
Third ventricleThird ventricle
Third ventricle

Connected laterally to lateral ventricles by means of Foramen of Monro and caudally to 4th ventricle by means of Aqueduct of sylvius

third ventricle
Blood supply of the brain
Middle cerebral Artery
Four segments:
• M1- horizontal / sphenoidal segment:
The stem of MCA  5-15
lenticulostriate branches
• M2- insular segment:
Runs deep in sylvian fissure and along
insula ; Superior & Inferior divisions
• M3- opercular segment:
Follows the curvature of operculum
and ends as terminal branches of MCA
• M4- cortical branches:
Terminal segment
Middle cerebral Artery
•M1- Horizontal segment
•Lateral Lenticulostriate
•M2- Insular segment
•M3- Opercular segment
•Opercular segment branches
•Operculofrontal artery
•M4- Cortical branches
•Lat Orbitofrontal
•Pre rolandic
•Rolandic
•Ant. parietal
•Post. parietal
•Angular
•Temporopolar
•Ant temporal
•Middle temporal
•Post. temporal
MCA supply
Cortical branches
Frontal branches supply the precentral, middle and inferior frontal
gyri.
Two parietal branches are distributed to the postcentral gyrus, the
lower part of the superior parietal lobule and the whole inferior
parietal lobule.
Two or three temporal branches supply the lateral surface of the
temporal lobe.
-motor and somatosensory cortices, with the exception of the lower
limb, the auditory area and the insula.
the lateral striate or lenticulostriate arteries - the lentiform
complex and the internal capsule and the caudate nucleus

Recommended for you

Histology of cerebral cortex
Histology of                cerebral cortexHistology of                cerebral cortex
Histology of cerebral cortex

This document provides an overview of the structure and cell types of the cerebral cortex. It begins with an introduction to the basic structure of neurons and the central nervous system. It then describes the six layers of the neocortex and the principal cell types found within each layer, including pyramidal cells, stellate cells, and others. The interconnections between neurons and various staining techniques used to visualize cortical components are also summarized. Finally, several common diseases that affect the cerebral cortex are briefly mentioned.

Blood supply of the brain
Blood supply of the brainBlood supply of the brain
Blood supply of the brain

I. The carotid system. II. The vertebral system. 1) The ophthalmic artery. 2) The anterior choroidal artery. 3) The posterior communicating artery II. The Vertebro-Basilar System VOS brain stem syndromes

vertebral systemcarotid systembrain stem syndromes
Cerebral blood flow -Varun
Cerebral blood flow -VarunCerebral blood flow -Varun
Cerebral blood flow -Varun

This document discusses cerebral blood flow, its autoregulation, clinical relevance, and the role of collaterals in ischemic stroke. It begins with an overview of cerebral blood supply and drainage, then describes the autoregulation mechanism and its importance. It also discusses cerebral collaterals and their significance in acute ischemic stroke. The majority of the document provides detailed descriptions of the anatomy of cerebral arteries, veins, and sinuses. It explains factors that regulate cerebral blood flow and perfusion pressure, including metabolism, carbon dioxide, oxygen, and autoregulation.

Posterior cerebral artery
• P1 or Peduncular segment
• short segment from the basilar tip to the PComA
– Mesencephalic br. – Cr. Nv. Nuclei 3 - 6
– Thalamoperforating arteries - diencephalon and midbrain
• P2 or ambient segment
• runs in the ambient cistern from the PComA to the portion of paramesencephalic cistern
– Thalamogeniculate br.
– Medial posterior choroidal arteries
– Lateral posterior choroidal arteries
– Ant temporal
• P3 or quadrigeminal segment
• Runs in calcrine fissure
– Hippocampal artery
– middle, and posterior temporal arteries
– Posterior pericallosal artery
P4 –DISTAL SEGMENT
– Parieto-occipital artery
– Calcarine artery
• The artery of Percheron is a rare variant of the posterior cerebral
circulation characterised by a solitary arterial trunk that supplies
blood to the paramedian thalamiand the
rostral midbrain bilaterally.
POSTERIOR CEREBRAL ARTERY SUPPLIES
The cortical branches.
Temporal branches-to the uncus and the parahippocampal, medial
and lateral occipitotemporal gyri.
Occipital branches- the cuneus, lingual gyrus and posterolateral
surface of the occipital lobe.
Parieto-occipital branches -cuneus and precuneus.
-the visual areas of the cerebral cortex and other structures in the
visual pathway.
The central branches
the anterior thalamus, subthalamus, globus pallidus and lateral
geniculate body .
the choroid plexus of the third and lateral ventricles and the fornix.
supply the peduncle and the posterior thalamus, superior and
inferior colliculi, pineal gland and medial geniculate body.
Blood supply of the brain

Recommended for you

Blood supply of the brain
Blood supply of the brainBlood supply of the brain
Blood supply of the brain

The document summarizes the blood supply of the brain. It begins by noting the brain's high metabolic demands and sensitivity to hypoxia. It then discusses the various arterial systems that supply the brain, including the internal carotid and vertebral arteries, as well as the arterial circle of Willis. It provides details on the territories supplied by the anterior, middle, and posterior cerebral arteries. It also briefly discusses the venous drainage of the brain and blood-brain barrier.

‏لقطة شاشة ٢٠٢٣-١١-١٢ في ١١.٤٥.٤٨ ص.pdf
‏لقطة شاشة ٢٠٢٣-١١-١٢ في ١١.٤٥.٤٨ ص.pdf‏لقطة شاشة ٢٠٢٣-١١-١٢ في ١١.٤٥.٤٨ ص.pdf
‏لقطة شاشة ٢٠٢٣-١١-١٢ في ١١.٤٥.٤٨ ص.pdf

The document summarizes the vascularization of the brain. There are two main arterial circuits that supply the brain - the anterior circulation supplied by the internal carotid arteries, and the posterior circulation supplied by the vertebrobasilar system. These arteries anastomose to form the Circle of Willis at the base of the brain. The anterior circulation includes the internal carotid arteries, anterior cerebral arteries, anterior communicating artery, and middle cerebral arteries. The posterior circulation is supplied by the vertebral arteries, basilar artery, posterior cerebral arteries, and posterior communicating arteries.

ت
Blood supply of brain upendra
Blood supply of brain upendraBlood supply of brain upendra
Blood supply of brain upendra

The brain receives blood from two sources: the internal carotid arteries, which arise at the point in the neck where the common carotid arteries bifurcate, and the vertebral arteries . The internal carotid arteries branch to form two major cerebral arteries, the anterior and middle cerebral arteries. The right and left vertebral arteries come together at the level of the pons on the ventral surface of the brainstem to form the midline basilar artery. The basilar artery joins the blood supply from the internal carotids in an arterial ring at the base of the brain (in the vicinity of the hypothalamus and cerebral peduncles) called the circle of Willis. The posterior cerebral arteries arise at this confluence, as do two small bridging arteries, the anterior and posterior communicating arteries. Conjoining the two major sources of cerebral vascular supply via the circle of Willis presumably improves the chances of any region of the brain continuing to receive blood if one of the major arteries becomes occluded

dr upendra bhardwaj
Blood supply of internal capsule
• Striate branches of anterior cerebral
artery. (recurrent artery of Huebner). -
genu and anterior limb
• Medial and lateral striate branches of the
middle cerebral artery. (Charcot‘s artery
of cerebral haemorrhage). -the posterior
limb of the internal capsule.
• Central branches of the anterior choroidal
artery -sublentiform part.
• Some direct branches from the internal
carotid artery -genu.
• Central branches of the posterior
communicating artery.
• Posterolateral central branches of the
posterior cerebral artery -retrolentiform
and sublentiform parts
Mid brain blood supply
• Most of the blood supply is derived from
branches of the basilar artery.
• Posterior cerebral
• Superior cerebellar
• Posterior communicating
• posterior choroidal
Blood supply of the brain
Pons blood supply
The pons is supplied by the following arteries:
• Numerous (pontine) branches from the basilar
artery.
• Superior cerebellar artery.

Recommended for you

Vascular brain anatomy for Radiology by Dr Soumitra Halder
Vascular brain anatomy for Radiology by Dr Soumitra HalderVascular brain anatomy for Radiology by Dr Soumitra Halder
Vascular brain anatomy for Radiology by Dr Soumitra Halder

The document provides an overview of cerebral arterial and venous anatomy. It discusses: 1) The anterior and posterior cerebral circulations, including the internal carotid artery (ICA) and its branches that form the anterior circulation, and the vertebrobasilar system that forms the posterior circulation. 2) The branches of major arteries like the external carotid, vertebral, and basilar arteries. 3) Anatomical variations that can be seen, like hypoplastic vessels, fenestrations, and duplications. 4) Venous anatomy, including the dural venous sinuses and cerebral veins.

Brain vascular anatomy with MRA and MRI correlation
Brain vascular anatomy with MRA and MRI correlationBrain vascular anatomy with MRA and MRI correlation
Brain vascular anatomy with MRA and MRI correlation

This document provides an overview of the vascular anatomy of the brain. It discusses the arterial supply, venous drainage, and dural venous sinuses of the brain. For arterial supply, it describes the anterior and posterior circulations, including the internal carotid, vertebral, basilar, anterior cerebral, middle cerebral, and posterior cerebral arteries. It also discusses branches and territories of these vessels. For venous drainage, it outlines the internal cerebral veins and external cerebral veins, as well as dural venous sinuses such as the superior sagittal sinus. Watershed zones and vascular territories on cross sections are also depicted.

vascular supplymri anatomy braincva
BLOOD SUPPLY of brain and spinal cord.pptx
BLOOD SUPPLY of brain and spinal cord.pptxBLOOD SUPPLY of brain and spinal cord.pptx
BLOOD SUPPLY of brain and spinal cord.pptx

The document summarizes the blood supply of the brain and spinal cord. It discusses the major arteries including the internal carotid, vertebral, and basilar arteries. It describes the branches and territories supplied by the anterior, middle, and posterior cerebral arteries. It also discusses important anastomoses like the Circle of Willis. Various artery syndromes are summarized such as anterior cerebral artery occlusion presenting with contralateral leg weakness. Important veins are also mentioned along with clinical correlations of arterial occlusions.

clinical neurologyblood supply of brainblood supply of spinal cord
Blood supply of the brain
Medulla blood supply
• The medulla is supplied by the following
arteries:
• Two vertebral arteries.
• Anterior and posterior spinal arteries.
• Anterior and posterior inferior cerebellar
arteries.
• Basilar artery
Blood supply of the brain
• Branches of the vertebrobasilar
system and of the internal carotid
artery and P2 segment of the
posterior cerebral artery
• Lateral choroidal arteries -the
lateral and third ventricles.
• Posterior inferior cerebellar
arteries - choroid plexus in the
fourth ventricle .
• Anterior inferior cerebellar
arteries- choroid plexus of the
foramen of Luschka
BLOOD SUPPLY
OF VENTRICLES

Recommended for you

Blood supply of brain
Blood supply of brainBlood supply of brain
Blood supply of brain

The origin, course, branches, and distribution of internal carotid artery. The origin, course, branches, and distribution of basilar artery. Describe the formation, branches and distribution of circulus arteriosus. Outline the venous drainage of the brain.

Blood supply of brain
Blood supply of brainBlood supply of brain
Blood supply of brain

This document summarizes the anatomy of the circle of Willis and cerebral blood supply. It describes the circle of Willis as a polygonal anastomotic channel at the base of the brain supplied by the internal carotid and vertebral arteries. It then discusses the branches and functions of the circle of Willis, cortical and central arteries, lenticulostriate arteries, and the blood-brain barrier. Finally, it provides details on the regional arterial supply of different brain regions and applied anatomy related to various neurological syndromes.

pokhrelanatomynaihs
Cerebrovascular anatomy
Cerebrovascular anatomyCerebrovascular anatomy
Cerebrovascular anatomy

A detailed presentation of cerebral vessels including developmental anatomy, course, branches, territories and clinical anatomy.

circle of willismiddle cerebral arterypersistent trigeminal artery
Venous Drainage of The Brain
features
-does not follow the arterial pattern.
- thin-walled due to absence of muscular tissue in
their walls.
-no valves.
-runs in the subarachnoid space.
-superficial and deep
sinuses of the dura mater
(1) a postero-superior at the upper and back
part of the skull.
1 Superior Sagittal
2 Straight sinus
3 Inferior Sagittal
4 Two Transverse.
5 Occipital
(2) an antero-inferior at the base of the
skull.
1 Two Cavernous
2 Two Superior Petrosal
3 Two Intercavernous
4 Two Inferior Petrosal
5 Two sphenoparietal
• Thalamostriate vein +
Choroidal vein+Septal
= Internal cerebral vein
• Internal cerebral vein +
Basal Vein of Rosenthal
= Great vein of Galen
• Great vein of Galen +
ISS = Straight sinus
• Superior cerebral
vein drain to SSS
• SSS connects to
superficial middle
cerebral vein by
Troland’s vein.
• Transverse sinus
to superficial
middle cerebral
vein by vein of
Labbe’.
• SSS + straight
sinus + Occipital
sinus = Transverse
sinus
• Transverse sinus
later drain into
sigmoid sinus and
then to IJV.

Recommended for you

Cerebral vasculature
Cerebral vasculatureCerebral vasculature
Cerebral vasculature

The document discusses the anatomy and blood supply of the brain. It describes that the brain receives blood supply from two main systems - the carotid system and vertebrobasilar system. The carotid system provides 70% of the blood supply while the vertebrobasilar system provides the remaining 30%. It also discusses the key arteries like the internal carotid, vertebral, basilar and cerebral arteries along with their branches that supply different regions of the brain.

Arterial and venous supply of brain part2
Arterial and venous supply of brain part2 Arterial and venous supply of brain part2
Arterial and venous supply of brain part2

1. The document describes the anatomy and branches of the major cerebral arteries including the anterior, middle, and posterior cerebral arteries. 2. It discusses the typical branching patterns and territories supplied by each artery and their segments. 3. Variations in arterial anatomy are also summarized such as fenestrations, duplications, hypoplasia.

radiologyctbrain
Arterial supply of brain
Arterial supply of brainArterial supply of brain
Arterial supply of brain

The document discusses the arterial supply of the brain. It describes the major arteries - the vertebral arteries, basilar artery, internal carotid arteries, anterior cerebral artery, middle cerebral artery, and posterior cerebral artery. These arteries form anastomoses around the circle of Willis at the base of the brain to provide a continuous blood supply to the brain through both the carotid and vertebral systems. Disruptions to this arterial network can impair blood flow and oxygen delivery to the brain.

blood supply of brain arteries of brain
• Inferior cerebral vein drain
to superficial middle
cerebral vein terminates to
cavernous sinus
• Transverse sinus to
superficial middle cerebral
vein by vein of Labbe’.
• Anterior cerebral vein +
Deep middle cerebral Vein
+ Striate veins = Basal Vein
of Rosenthal
• Cavernous sinus drain to
transverse/sigmoid sinus
via superior and inferior
petrosal sinus.
Thank you

More Related Content

What's hot

Cerebellum
CerebellumCerebellum
Cerebellum
Abdul Ansari
 
spinal cord and applied aspects of spine
spinal cord and applied aspects of spinespinal cord and applied aspects of spine
spinal cord and applied aspects of spine
mrinal joshi
 
Anatomy of the anterior cerebral artery (ACA)
Anatomy of the anterior cerebral artery (ACA)Anatomy of the anterior cerebral artery (ACA)
Anatomy of the anterior cerebral artery (ACA)
Mohamed M.A. Zaitoun
 
Anatomy of pons
Anatomy of ponsAnatomy of pons
Anatomy of pons
Dr. Mohammad Mahmoud
 
Blood supply of the brain, neuro anatomy .
Blood supply of the brain, neuro anatomy .Blood supply of the brain, neuro anatomy .
Blood supply of the brain, neuro anatomy .
Faarah Yusuf
 
Corticospinal tract (Pyramidal tract)
Corticospinal tract (Pyramidal tract)Corticospinal tract (Pyramidal tract)
Corticospinal tract (Pyramidal tract)
Ajith lolita
 
Blood supply-of-brain
Blood supply-of-brainBlood supply-of-brain
Blood supply-of-brain
Phanindra Malla
 
Blood supply of brain
Blood supply of brainBlood supply of brain
Blood supply of brain
DR RML DELHI
 
Posterior cerebral circulation - Gross Anatomy
Posterior cerebral circulation - Gross AnatomyPosterior cerebral circulation - Gross Anatomy
Posterior cerebral circulation - Gross Anatomy
Dr. Mohammed Sadiq Azam M.D.
 
Blood supply of brain
Blood supply of brainBlood supply of brain
Blood supply of brain
Monir Hossain
 
Cerebellum
CerebellumCerebellum
Cerebellum
Pratap Tiwari
 
ICA anatomy
ICA anatomyICA anatomy
ICA anatomy
Mohamed E Elsebaey
 
Anatomy of medulla oblongata
Anatomy of medulla oblongataAnatomy of medulla oblongata
Anatomy of medulla oblongata
Dr. Mohammad Mahmoud
 
Corpus callosum with disconnection syndromes
Corpus callosum with disconnection syndromes Corpus callosum with disconnection syndromes
Corpus callosum with disconnection syndromes
Amruta Rajamanya
 
Internal capsule
Internal capsuleInternal capsule
Internal capsule
MBBS IMS MSU
 
Blood supply of the brain
Blood supply of the brainBlood supply of the brain
Blood supply of the brain
DHABHAI
 
Cisterns of brain
Cisterns of brainCisterns of brain
Cisterns of brain
suresh Bishokarma
 
Third ventricle
Third ventricleThird ventricle
Third ventricle
PGINeurosurgery
 
Histology of cerebral cortex
Histology of                cerebral cortexHistology of                cerebral cortex
Histology of cerebral cortex
anny555333
 
Blood supply of the brain
Blood supply of the brainBlood supply of the brain
Blood supply of the brain
Amr Hassan
 

What's hot (20)

Cerebellum
CerebellumCerebellum
Cerebellum
 
spinal cord and applied aspects of spine
spinal cord and applied aspects of spinespinal cord and applied aspects of spine
spinal cord and applied aspects of spine
 
Anatomy of the anterior cerebral artery (ACA)
Anatomy of the anterior cerebral artery (ACA)Anatomy of the anterior cerebral artery (ACA)
Anatomy of the anterior cerebral artery (ACA)
 
Anatomy of pons
Anatomy of ponsAnatomy of pons
Anatomy of pons
 
Blood supply of the brain, neuro anatomy .
Blood supply of the brain, neuro anatomy .Blood supply of the brain, neuro anatomy .
Blood supply of the brain, neuro anatomy .
 
Corticospinal tract (Pyramidal tract)
Corticospinal tract (Pyramidal tract)Corticospinal tract (Pyramidal tract)
Corticospinal tract (Pyramidal tract)
 
Blood supply-of-brain
Blood supply-of-brainBlood supply-of-brain
Blood supply-of-brain
 
Blood supply of brain
Blood supply of brainBlood supply of brain
Blood supply of brain
 
Posterior cerebral circulation - Gross Anatomy
Posterior cerebral circulation - Gross AnatomyPosterior cerebral circulation - Gross Anatomy
Posterior cerebral circulation - Gross Anatomy
 
Blood supply of brain
Blood supply of brainBlood supply of brain
Blood supply of brain
 
Cerebellum
CerebellumCerebellum
Cerebellum
 
ICA anatomy
ICA anatomyICA anatomy
ICA anatomy
 
Anatomy of medulla oblongata
Anatomy of medulla oblongataAnatomy of medulla oblongata
Anatomy of medulla oblongata
 
Corpus callosum with disconnection syndromes
Corpus callosum with disconnection syndromes Corpus callosum with disconnection syndromes
Corpus callosum with disconnection syndromes
 
Internal capsule
Internal capsuleInternal capsule
Internal capsule
 
Blood supply of the brain
Blood supply of the brainBlood supply of the brain
Blood supply of the brain
 
Cisterns of brain
Cisterns of brainCisterns of brain
Cisterns of brain
 
Third ventricle
Third ventricleThird ventricle
Third ventricle
 
Histology of cerebral cortex
Histology of                cerebral cortexHistology of                cerebral cortex
Histology of cerebral cortex
 
Blood supply of the brain
Blood supply of the brainBlood supply of the brain
Blood supply of the brain
 

Similar to Blood supply of the brain

Cerebral blood flow -Varun
Cerebral blood flow -VarunCerebral blood flow -Varun
Cerebral blood flow -Varun
varunbobby
 
Blood supply of the brain
Blood supply of the brainBlood supply of the brain
Blood supply of the brain
Suresh Managutti
 
‏لقطة شاشة ٢٠٢٣-١١-١٢ في ١١.٤٥.٤٨ ص.pdf
‏لقطة شاشة ٢٠٢٣-١١-١٢ في ١١.٤٥.٤٨ ص.pdf‏لقطة شاشة ٢٠٢٣-١١-١٢ في ١١.٤٥.٤٨ ص.pdf
‏لقطة شاشة ٢٠٢٣-١١-١٢ في ١١.٤٥.٤٨ ص.pdf
ahmad2100799
 
Blood supply of brain upendra
Blood supply of brain upendraBlood supply of brain upendra
Blood supply of brain upendra
upendra bhardwaj
 
Vascular brain anatomy for Radiology by Dr Soumitra Halder
Vascular brain anatomy for Radiology by Dr Soumitra HalderVascular brain anatomy for Radiology by Dr Soumitra Halder
Vascular brain anatomy for Radiology by Dr Soumitra Halder
Soumitra Halder
 
Brain vascular anatomy with MRA and MRI correlation
Brain vascular anatomy with MRA and MRI correlationBrain vascular anatomy with MRA and MRI correlation
Brain vascular anatomy with MRA and MRI correlation
Arif S
 
BLOOD SUPPLY of brain and spinal cord.pptx
BLOOD SUPPLY of brain and spinal cord.pptxBLOOD SUPPLY of brain and spinal cord.pptx
BLOOD SUPPLY of brain and spinal cord.pptx
munnam37
 
Blood supply of brain
Blood supply of brainBlood supply of brain
Blood supply of brain
Savinaya Kumar
 
Blood supply of brain
Blood supply of brainBlood supply of brain
Cerebrovascular anatomy
Cerebrovascular anatomyCerebrovascular anatomy
Cerebrovascular anatomy
Prisma Health Upstate
 
Cerebral vasculature
Cerebral vasculatureCerebral vasculature
Cerebral vasculature
Rohit Paswan
 
Arterial and venous supply of brain part2
Arterial and venous supply of brain part2 Arterial and venous supply of brain part2
Arterial and venous supply of brain part2
Sameeha Khan
 
Arterial supply of brain
Arterial supply of brainArterial supply of brain
Arterial supply of brain
Jekadeshnaidu Panirselvam
 
Blood supply of the brain (1).pptx
Blood supply of the brain (1).pptxBlood supply of the brain (1).pptx
Blood supply of the brain (1).pptx
GAFOCalaqqii
 
Blood supply of brain
Blood supply of brainBlood supply of brain
Blood supply of brain
ZaynZafar2
 
brain arterial anatomy 2vish.pptx
brain arterial anatomy 2vish.pptxbrain arterial anatomy 2vish.pptx
brain arterial anatomy 2vish.pptx
VishnuDutt40
 
Blood supply of the brain
Blood supply of the brainBlood supply of the brain
Blood supply of the brain
Medical Knowledge
 
Normal blood supply of brain
Normal blood supply of brain Normal blood supply of brain
Normal blood supply of brain
srikanth reddy
 
Blood supply of brain & spinal cord
Blood supply of brain & spinal cordBlood supply of brain & spinal cord
Blood supply of brain & spinal cord
Dr. sana yaseen
 
arterial supply of cns by dr dinesh.pptx
arterial supply of cns by dr dinesh.pptxarterial supply of cns by dr dinesh.pptx
arterial supply of cns by dr dinesh.pptx
dineshdandia
 

Similar to Blood supply of the brain (20)

Cerebral blood flow -Varun
Cerebral blood flow -VarunCerebral blood flow -Varun
Cerebral blood flow -Varun
 
Blood supply of the brain
Blood supply of the brainBlood supply of the brain
Blood supply of the brain
 
‏لقطة شاشة ٢٠٢٣-١١-١٢ في ١١.٤٥.٤٨ ص.pdf
‏لقطة شاشة ٢٠٢٣-١١-١٢ في ١١.٤٥.٤٨ ص.pdf‏لقطة شاشة ٢٠٢٣-١١-١٢ في ١١.٤٥.٤٨ ص.pdf
‏لقطة شاشة ٢٠٢٣-١١-١٢ في ١١.٤٥.٤٨ ص.pdf
 
Blood supply of brain upendra
Blood supply of brain upendraBlood supply of brain upendra
Blood supply of brain upendra
 
Vascular brain anatomy for Radiology by Dr Soumitra Halder
Vascular brain anatomy for Radiology by Dr Soumitra HalderVascular brain anatomy for Radiology by Dr Soumitra Halder
Vascular brain anatomy for Radiology by Dr Soumitra Halder
 
Brain vascular anatomy with MRA and MRI correlation
Brain vascular anatomy with MRA and MRI correlationBrain vascular anatomy with MRA and MRI correlation
Brain vascular anatomy with MRA and MRI correlation
 
BLOOD SUPPLY of brain and spinal cord.pptx
BLOOD SUPPLY of brain and spinal cord.pptxBLOOD SUPPLY of brain and spinal cord.pptx
BLOOD SUPPLY of brain and spinal cord.pptx
 
Blood supply of brain
Blood supply of brainBlood supply of brain
Blood supply of brain
 
Blood supply of brain
Blood supply of brainBlood supply of brain
Blood supply of brain
 
Cerebrovascular anatomy
Cerebrovascular anatomyCerebrovascular anatomy
Cerebrovascular anatomy
 
Cerebral vasculature
Cerebral vasculatureCerebral vasculature
Cerebral vasculature
 
Arterial and venous supply of brain part2
Arterial and venous supply of brain part2 Arterial and venous supply of brain part2
Arterial and venous supply of brain part2
 
Arterial supply of brain
Arterial supply of brainArterial supply of brain
Arterial supply of brain
 
Blood supply of the brain (1).pptx
Blood supply of the brain (1).pptxBlood supply of the brain (1).pptx
Blood supply of the brain (1).pptx
 
Blood supply of brain
Blood supply of brainBlood supply of brain
Blood supply of brain
 
brain arterial anatomy 2vish.pptx
brain arterial anatomy 2vish.pptxbrain arterial anatomy 2vish.pptx
brain arterial anatomy 2vish.pptx
 
Blood supply of the brain
Blood supply of the brainBlood supply of the brain
Blood supply of the brain
 
Normal blood supply of brain
Normal blood supply of brain Normal blood supply of brain
Normal blood supply of brain
 
Blood supply of brain & spinal cord
Blood supply of brain & spinal cordBlood supply of brain & spinal cord
Blood supply of brain & spinal cord
 
arterial supply of cns by dr dinesh.pptx
arterial supply of cns by dr dinesh.pptxarterial supply of cns by dr dinesh.pptx
arterial supply of cns by dr dinesh.pptx
 

Recently uploaded

Giant Breast Lipoma Masquerading as Breast Enlargement ورم شحمي عملاق للثدي م...
Giant Breast Lipoma Masquerading as Breast Enlargement ورم شحمي عملاق للثدي م...Giant Breast Lipoma Masquerading as Breast Enlargement ورم شحمي عملاق للثدي م...
Giant Breast Lipoma Masquerading as Breast Enlargement ورم شحمي عملاق للثدي م...
Mohamad محمد Al-Gailani الكيلاني
 
Nursing management of patient with peritoneal dialysis
Nursing management of patient with peritoneal dialysisNursing management of patient with peritoneal dialysis
Nursing management of patient with peritoneal dialysis
shivalingatalekar1
 
FSSAI act, Food safety act, Food safety and standards act 2006, Rules and reg...
FSSAI act, Food safety act, Food safety and standards act 2006, Rules and reg...FSSAI act, Food safety act, Food safety and standards act 2006, Rules and reg...
FSSAI act, Food safety act, Food safety and standards act 2006, Rules and reg...
PratibhaSonawane5
 
Abnormal CSF Diagnosis and Lumbar puncture
Abnormal CSF Diagnosis and Lumbar punctureAbnormal CSF Diagnosis and Lumbar puncture
Abnormal CSF Diagnosis and Lumbar puncture
Preet Mehta
 
Introduction to Radiotherapy technology I.pptx
Introduction to Radiotherapy technology I.pptxIntroduction to Radiotherapy technology I.pptx
Introduction to Radiotherapy technology I.pptx
JalalEltabib1
 
Geriatric radiography.pptx Geriatric radiography.pptxGeriatric radiography.pptx
Geriatric radiography.pptx Geriatric radiography.pptxGeriatric radiography.pptxGeriatric radiography.pptx Geriatric radiography.pptxGeriatric radiography.pptx
Geriatric radiography.pptx Geriatric radiography.pptxGeriatric radiography.pptx
Dinesh Danny
 
Amygdala Medi-Trivia Quiz (Prelims) | FAQ 2024
Amygdala Medi-Trivia Quiz (Prelims) | FAQ 2024Amygdala Medi-Trivia Quiz (Prelims) | FAQ 2024
Amygdala Medi-Trivia Quiz (Prelims) | FAQ 2024
Anindya Das Adhikary
 
Exploring Alternatives- Why Laparoscopy Isn't Always Best for Hydrosalpinx.pptx
Exploring Alternatives- Why Laparoscopy Isn't Always Best for Hydrosalpinx.pptxExploring Alternatives- Why Laparoscopy Isn't Always Best for Hydrosalpinx.pptx
Exploring Alternatives- Why Laparoscopy Isn't Always Best for Hydrosalpinx.pptx
FFragrant
 
TEST BANK For Katzung's Basic and Clinical Pharmacology, 16th Edition By {Tod...
TEST BANK For Katzung's Basic and Clinical Pharmacology, 16th Edition By {Tod...TEST BANK For Katzung's Basic and Clinical Pharmacology, 16th Edition By {Tod...
TEST BANK For Katzung's Basic and Clinical Pharmacology, 16th Edition By {Tod...
rightmanforbloodline
 
Perforation.pptx
Perforation.pptxPerforation.pptx
Perforation.pptx
Nandish Sannaiah
 
vaginal thrush presentation by Dr. Rewas Ali
vaginal thrush presentation by Dr. Rewas Alivaginal thrush presentation by Dr. Rewas Ali
vaginal thrush presentation by Dr. Rewas Ali
RewAs ALI
 
Obstructive sleep apnea (OSA) and Obesity hypoventilation syndrome (OHS)
Obstructive sleep apnea (OSA) and Obesity hypoventilation syndrome (OHS)Obstructive sleep apnea (OSA) and Obesity hypoventilation syndrome (OHS)
Obstructive sleep apnea (OSA) and Obesity hypoventilation syndrome (OHS)
HafsaAnwaar1
 
Handbook of Dental anatomy (practical part)
Handbook of Dental anatomy (practical part)Handbook of Dental anatomy (practical part)
Handbook of Dental anatomy (practical part)
MuhammedMNasser
 
Veterinary Medicines Manufacturers in India
Veterinary Medicines Manufacturers in IndiaVeterinary Medicines Manufacturers in India
Veterinary Medicines Manufacturers in India
Heilsaa Care
 
Journal club presentation JC 28.5.24 edit.pptx
Journal club presentation JC 28.5.24 edit.pptxJournal club presentation JC 28.5.24 edit.pptx
Journal club presentation JC 28.5.24 edit.pptx
AdhyaDubey1
 
Top 10 Habits for Longevity [Biohacker Summit 2024]
Top 10 Habits for Longevity [Biohacker Summit 2024]Top 10 Habits for Longevity [Biohacker Summit 2024]
Top 10 Habits for Longevity [Biohacker Summit 2024]
Olli Sovijärvi
 
Prodrug design for Sustained Drug action -.KB.pptx
Prodrug design for Sustained Drug action -.KB.pptxProdrug design for Sustained Drug action -.KB.pptx
Prodrug design for Sustained Drug action -.KB.pptx
ANAGHA K B
 
Best All Range PCD Pharma Franchise in India
Best All Range PCD Pharma Franchise in IndiaBest All Range PCD Pharma Franchise in India
Best All Range PCD Pharma Franchise in India
See Ever Healthcare
 
Westgard's rules and LJ (Levey Jennings) Charts.
Westgard's rules and LJ (Levey Jennings) Charts.Westgard's rules and LJ (Levey Jennings) Charts.
Westgard's rules and LJ (Levey Jennings) Charts.
Reenaz Shaik
 
Drug Repurposing for Parasitic Diseases.pptx
Drug Repurposing for Parasitic Diseases.pptxDrug Repurposing for Parasitic Diseases.pptx
Drug Repurposing for Parasitic Diseases.pptx
drebrahiim
 

Recently uploaded (20)

Giant Breast Lipoma Masquerading as Breast Enlargement ورم شحمي عملاق للثدي م...
Giant Breast Lipoma Masquerading as Breast Enlargement ورم شحمي عملاق للثدي م...Giant Breast Lipoma Masquerading as Breast Enlargement ورم شحمي عملاق للثدي م...
Giant Breast Lipoma Masquerading as Breast Enlargement ورم شحمي عملاق للثدي م...
 
Nursing management of patient with peritoneal dialysis
Nursing management of patient with peritoneal dialysisNursing management of patient with peritoneal dialysis
Nursing management of patient with peritoneal dialysis
 
FSSAI act, Food safety act, Food safety and standards act 2006, Rules and reg...
FSSAI act, Food safety act, Food safety and standards act 2006, Rules and reg...FSSAI act, Food safety act, Food safety and standards act 2006, Rules and reg...
FSSAI act, Food safety act, Food safety and standards act 2006, Rules and reg...
 
Abnormal CSF Diagnosis and Lumbar puncture
Abnormal CSF Diagnosis and Lumbar punctureAbnormal CSF Diagnosis and Lumbar puncture
Abnormal CSF Diagnosis and Lumbar puncture
 
Introduction to Radiotherapy technology I.pptx
Introduction to Radiotherapy technology I.pptxIntroduction to Radiotherapy technology I.pptx
Introduction to Radiotherapy technology I.pptx
 
Geriatric radiography.pptx Geriatric radiography.pptxGeriatric radiography.pptx
Geriatric radiography.pptx Geriatric radiography.pptxGeriatric radiography.pptxGeriatric radiography.pptx Geriatric radiography.pptxGeriatric radiography.pptx
Geriatric radiography.pptx Geriatric radiography.pptxGeriatric radiography.pptx
 
Amygdala Medi-Trivia Quiz (Prelims) | FAQ 2024
Amygdala Medi-Trivia Quiz (Prelims) | FAQ 2024Amygdala Medi-Trivia Quiz (Prelims) | FAQ 2024
Amygdala Medi-Trivia Quiz (Prelims) | FAQ 2024
 
Exploring Alternatives- Why Laparoscopy Isn't Always Best for Hydrosalpinx.pptx
Exploring Alternatives- Why Laparoscopy Isn't Always Best for Hydrosalpinx.pptxExploring Alternatives- Why Laparoscopy Isn't Always Best for Hydrosalpinx.pptx
Exploring Alternatives- Why Laparoscopy Isn't Always Best for Hydrosalpinx.pptx
 
TEST BANK For Katzung's Basic and Clinical Pharmacology, 16th Edition By {Tod...
TEST BANK For Katzung's Basic and Clinical Pharmacology, 16th Edition By {Tod...TEST BANK For Katzung's Basic and Clinical Pharmacology, 16th Edition By {Tod...
TEST BANK For Katzung's Basic and Clinical Pharmacology, 16th Edition By {Tod...
 
Perforation.pptx
Perforation.pptxPerforation.pptx
Perforation.pptx
 
vaginal thrush presentation by Dr. Rewas Ali
vaginal thrush presentation by Dr. Rewas Alivaginal thrush presentation by Dr. Rewas Ali
vaginal thrush presentation by Dr. Rewas Ali
 
Obstructive sleep apnea (OSA) and Obesity hypoventilation syndrome (OHS)
Obstructive sleep apnea (OSA) and Obesity hypoventilation syndrome (OHS)Obstructive sleep apnea (OSA) and Obesity hypoventilation syndrome (OHS)
Obstructive sleep apnea (OSA) and Obesity hypoventilation syndrome (OHS)
 
Handbook of Dental anatomy (practical part)
Handbook of Dental anatomy (practical part)Handbook of Dental anatomy (practical part)
Handbook of Dental anatomy (practical part)
 
Veterinary Medicines Manufacturers in India
Veterinary Medicines Manufacturers in IndiaVeterinary Medicines Manufacturers in India
Veterinary Medicines Manufacturers in India
 
Journal club presentation JC 28.5.24 edit.pptx
Journal club presentation JC 28.5.24 edit.pptxJournal club presentation JC 28.5.24 edit.pptx
Journal club presentation JC 28.5.24 edit.pptx
 
Top 10 Habits for Longevity [Biohacker Summit 2024]
Top 10 Habits for Longevity [Biohacker Summit 2024]Top 10 Habits for Longevity [Biohacker Summit 2024]
Top 10 Habits for Longevity [Biohacker Summit 2024]
 
Prodrug design for Sustained Drug action -.KB.pptx
Prodrug design for Sustained Drug action -.KB.pptxProdrug design for Sustained Drug action -.KB.pptx
Prodrug design for Sustained Drug action -.KB.pptx
 
Best All Range PCD Pharma Franchise in India
Best All Range PCD Pharma Franchise in IndiaBest All Range PCD Pharma Franchise in India
Best All Range PCD Pharma Franchise in India
 
Westgard's rules and LJ (Levey Jennings) Charts.
Westgard's rules and LJ (Levey Jennings) Charts.Westgard's rules and LJ (Levey Jennings) Charts.
Westgard's rules and LJ (Levey Jennings) Charts.
 
Drug Repurposing for Parasitic Diseases.pptx
Drug Repurposing for Parasitic Diseases.pptxDrug Repurposing for Parasitic Diseases.pptx
Drug Repurposing for Parasitic Diseases.pptx
 

Blood supply of the brain

  • 1. BLOOD SUPPLY OF BRAIN PRESENTER: DR PAWAN KUMAR DR R M L & PGIMER, DELHI
  • 2. -15% of the cardiac output -25% of the total oxygen. -Cerebral blood flow is approximately 50 ml/g/min. -Supplied by two internal carotid arteries and two vertebral arteries.
  • 3. AORTIC ARCH 1.Innominate artery (IA) / Brachiocephalic trunk -Rt subclavian artery (SCA)- Right vertebral artery -Rt common carotid artery (CCA) 2.Left Common Carotid Artery (CCA) 3.Left Subclavian Artery (SCA)- Left Vertebral Artery (VA)
  • 4. Major Arteries 1.INTERNAL CAROTID- -ARCH OF AORTA-INTERNAL +EXTERNAL CAROTID AT SUPERIOR BORDER OF THYROID CARTILAGE -ENTER THE BRAIN-CAROTID CANAL 2. VERTEBRAL ARTETIS -FROM 1st PART OF SUBCLAVIAN ARTERY. -TRAVERSE FROM C6 TO C1 –FORAMAN MAGNUM -UNITES TO FORM BASILAR ARTERY AT THE LOWER BORDER OF THE PONS.
  • 5. INTERNAL CAROTID ARTERY • Four segments: – Cervical – Petrous – Cavernous – Cerebral / Supraclinoid • Branches – Meningohypophyseal trunk – Ophthalmic artery (OA) – Superior hypophyseal artery – Posterior communicating artery (PComA) – Anterior choroidal artery (AChA) – Anterior cerebral artery (ACA) – Middle cerebral artery (MCA) (continuation of the ICA)
  • 6. – Cervical segment – From the bifurcation of CCA – Extends to the entrance into the carotid foramen of the petrous temporal bone – No branches
  • 7. -Petrous Segment -Extends from base of skull to the petrous apex -Ascending , Genu, Horizontal -Enters cranial vault via foramen lacerum. -Branches - Carotico tympanic A & A of pterygoid canal
  • 8. Cavernous Segment -Passes through cavernous sinus with Abducens Nerve -Cavernous branches-trigeminal ganglion -Branches supply posterior pituitary (Meningohypophyseal Artery)
  • 9. - Cerebral part Begins after penetration of dura, continues until bifurcation into ACA & MCA 3 Branches: 1.Ophthalmic A 2.Posterior Communicating A 3.Anterior Choroidal A- -ends in the choroid plexus. -crus cerebri, the lateral geniculate body, the optic tract, and the internal capsule).
  • 10. Ophthalmic artery  1st intradural branch of ICA  Supplies globe, orbit,frontal and ethmoidal sinuses, & frontal scalp  Central retinal A, Long & Short posterior ciliary branches  Branches of Ophthalmic A anastamose with Maxillary A branches - potential for collateral flow in cases of proximal carotid occlusion
  • 11. Vertebral artery • V1: (extraosseous-origin to c6): Segmental cervical muscular and spinal branches - • V2( foraminal- C6 TO C1): : meningeal/muscular/spinal branches • V3 (extraspinal-C1- dura): Posterior meningeal artery • V4: (intradural) – Anterior and sometimes posterior spinal arteries – Perforating branches to medulla – PICA: gives off perforating medullary, choroid, tonsillar, cerebellar branches
  • 12. BASILAR ARTERY 1.The pontine arteries 2. The labyrinthine -the internal ear. - often arises as a branch of the anterior inferior cerebellar artery. 3. The anterior inferior cerebellar artery the anterior and inferior parts of the cerebellum . A few branches pass to the pons and the upper part of the medulla oblongata. 4. The superior cerebellar artery arises close to the termination of the basilar artery the superior surface of the cerebellum, pons, the pineal gland, and the superior medullary velum, tela chorde of third ventricle. 5.The posterior cerebral (in interpeduncular cistern)
  • 14. CIRCLE OF WILLIS -In the interpeduncular fossa at the base of the brain. - It is formed by the anastomosis between the two internal carotid arteries and the two vertebral arteries
  • 15. perforating arteries from the circle of Willis or from vessels near • four principal groups 1.anteromedial group-the optic chiasma; lamina terminalis; anteriorpreoptic and supraoptic areas of the hypothalamus; septum pellucidum; paraolfactory areas; anterior columns of the fornix; cingulate gyrus; rostrum of the corpus callosum; anterior part of the putamen and head of the caudate nucleus.
  • 16. 2-The posteromedial group-the hypothalamus and pituitary and the anterior and medial parts of the thalamus via thalamoperforating arteries ,the mammillary bodies, subthalamus, lateral wall of the third ventricle, the medial thalamus, and globus pallidus. 3-The anterolateral group (lenticulostriate arteries)-posterior striatum, lateral globus pallidus and internal capsule. 4-The posterolateral -the cerebral peduncle, colliculi, pineal gland and posterior thalamus and medial geniculate body.
  • 18. Anterior cerebral Artery Three segments:  A1 –Pre communicating segment  Medial lenticulostriate branches  A2-Post communicating segment  Recurrent artery of Heubner  Orbitofrontal  Frontopolar  A3- distal ACA / cortical branches  Pericallosal  Callosomarginal
  • 19. ACA Supply The cortical branches. -Two or three orbital branches supply the olfactory cortex, gyrus rectus and medial orbital gyrus. -Frontal branches supply the corpus callosum, cingulate gyrus, medial frontal gyrus and paracentral lobule. - Parietal branches supply the precuneus - the frontal and parietal supply a strip of territory on the superolateral surface that represent the lower limb. CENTRAL BRANCHES: -they supply the rostrum of the corpus callosum, the septum pellucidum, the anterior part of the putamen, the head of the caudate nucleus and adjacent parts of the internal capsule
  • 22. Middle cerebral Artery Four segments: • M1- horizontal / sphenoidal segment: The stem of MCA  5-15 lenticulostriate branches • M2- insular segment: Runs deep in sylvian fissure and along insula ; Superior & Inferior divisions • M3- opercular segment: Follows the curvature of operculum and ends as terminal branches of MCA • M4- cortical branches: Terminal segment
  • 23. Middle cerebral Artery •M1- Horizontal segment •Lateral Lenticulostriate •M2- Insular segment •M3- Opercular segment •Opercular segment branches •Operculofrontal artery •M4- Cortical branches •Lat Orbitofrontal •Pre rolandic •Rolandic •Ant. parietal •Post. parietal •Angular •Temporopolar •Ant temporal •Middle temporal •Post. temporal
  • 24. MCA supply Cortical branches Frontal branches supply the precentral, middle and inferior frontal gyri. Two parietal branches are distributed to the postcentral gyrus, the lower part of the superior parietal lobule and the whole inferior parietal lobule. Two or three temporal branches supply the lateral surface of the temporal lobe. -motor and somatosensory cortices, with the exception of the lower limb, the auditory area and the insula. the lateral striate or lenticulostriate arteries - the lentiform complex and the internal capsule and the caudate nucleus
  • 25. Posterior cerebral artery • P1 or Peduncular segment • short segment from the basilar tip to the PComA – Mesencephalic br. – Cr. Nv. Nuclei 3 - 6 – Thalamoperforating arteries - diencephalon and midbrain • P2 or ambient segment • runs in the ambient cistern from the PComA to the portion of paramesencephalic cistern – Thalamogeniculate br. – Medial posterior choroidal arteries – Lateral posterior choroidal arteries – Ant temporal • P3 or quadrigeminal segment • Runs in calcrine fissure – Hippocampal artery – middle, and posterior temporal arteries – Posterior pericallosal artery P4 –DISTAL SEGMENT – Parieto-occipital artery – Calcarine artery
  • 26. • The artery of Percheron is a rare variant of the posterior cerebral circulation characterised by a solitary arterial trunk that supplies blood to the paramedian thalamiand the rostral midbrain bilaterally.
  • 27. POSTERIOR CEREBRAL ARTERY SUPPLIES The cortical branches. Temporal branches-to the uncus and the parahippocampal, medial and lateral occipitotemporal gyri. Occipital branches- the cuneus, lingual gyrus and posterolateral surface of the occipital lobe. Parieto-occipital branches -cuneus and precuneus. -the visual areas of the cerebral cortex and other structures in the visual pathway. The central branches the anterior thalamus, subthalamus, globus pallidus and lateral geniculate body . the choroid plexus of the third and lateral ventricles and the fornix. supply the peduncle and the posterior thalamus, superior and inferior colliculi, pineal gland and medial geniculate body.
  • 29. Blood supply of internal capsule • Striate branches of anterior cerebral artery. (recurrent artery of Huebner). - genu and anterior limb • Medial and lateral striate branches of the middle cerebral artery. (Charcot‘s artery of cerebral haemorrhage). -the posterior limb of the internal capsule. • Central branches of the anterior choroidal artery -sublentiform part. • Some direct branches from the internal carotid artery -genu. • Central branches of the posterior communicating artery. • Posterolateral central branches of the posterior cerebral artery -retrolentiform and sublentiform parts
  • 30. Mid brain blood supply • Most of the blood supply is derived from branches of the basilar artery. • Posterior cerebral • Superior cerebellar • Posterior communicating • posterior choroidal
  • 32. Pons blood supply The pons is supplied by the following arteries: • Numerous (pontine) branches from the basilar artery. • Superior cerebellar artery.
  • 34. Medulla blood supply • The medulla is supplied by the following arteries: • Two vertebral arteries. • Anterior and posterior spinal arteries. • Anterior and posterior inferior cerebellar arteries. • Basilar artery
  • 36. • Branches of the vertebrobasilar system and of the internal carotid artery and P2 segment of the posterior cerebral artery • Lateral choroidal arteries -the lateral and third ventricles. • Posterior inferior cerebellar arteries - choroid plexus in the fourth ventricle . • Anterior inferior cerebellar arteries- choroid plexus of the foramen of Luschka BLOOD SUPPLY OF VENTRICLES
  • 37. Venous Drainage of The Brain features -does not follow the arterial pattern. - thin-walled due to absence of muscular tissue in their walls. -no valves. -runs in the subarachnoid space. -superficial and deep
  • 38. sinuses of the dura mater (1) a postero-superior at the upper and back part of the skull. 1 Superior Sagittal 2 Straight sinus 3 Inferior Sagittal 4 Two Transverse. 5 Occipital (2) an antero-inferior at the base of the skull. 1 Two Cavernous 2 Two Superior Petrosal 3 Two Intercavernous 4 Two Inferior Petrosal 5 Two sphenoparietal
  • 39. • Thalamostriate vein + Choroidal vein+Septal = Internal cerebral vein • Internal cerebral vein + Basal Vein of Rosenthal = Great vein of Galen • Great vein of Galen + ISS = Straight sinus
  • 40. • Superior cerebral vein drain to SSS • SSS connects to superficial middle cerebral vein by Troland’s vein. • Transverse sinus to superficial middle cerebral vein by vein of Labbe’. • SSS + straight sinus + Occipital sinus = Transverse sinus • Transverse sinus later drain into sigmoid sinus and then to IJV.
  • 41. • Inferior cerebral vein drain to superficial middle cerebral vein terminates to cavernous sinus • Transverse sinus to superficial middle cerebral vein by vein of Labbe’. • Anterior cerebral vein + Deep middle cerebral Vein + Striate veins = Basal Vein of Rosenthal • Cavernous sinus drain to transverse/sigmoid sinus via superior and inferior petrosal sinus.

Editor's Notes

  1. Sc-superior colliculus, mgn/lgn-geniculate nucleus, ML-medial leminiscus, cc crus cerebri, scp-superior cerebellar peduncle, SN?