Topic discussed here is the Structure & function of Brain

1. CONTROL &
COORDINATION-II

2. HUMAN BRAIN

6. MENINGES
CENTRAL NERVOUS SYSTEM

7. Dura mater –
Tough outer
most fibrous
layer which
lines the skull
and vertebral
column
Arachnoid –
Delicate middle
membrane, it is
separated from
Dura mater by sub-
dural space
Pia mater – Thin
delicate inner
membrane. It
contains blood
vessels.
MENINGES :- COVERINGS OF THE BRAIN

8. VENTRICLES OF THE
BRAIN
• The fluid filled cavities in
the brain is called
ventricles
• The space between
the meninges and the
ventricles are filled
with a fluid called
cerebrospinal fluid.
(CSF)
Functions-
• Protecting the brain
from external
mechanical injuries
• Distributes nutrients

9. CEREBRO SPINAL FLUID
(CSF)
CSF is secreted by specialized capillaries known as
choroid plexus which lies in the cavities of the brain
CSF is a crystal clear slightly alkaline fluid derived
from blood plasma
Function
1.Protect against shock
2.Maintain uniform pressure around it.
3.Supply food and oxygen.

10. Cerebro Spinal Fluid (CSF)

11. PARTS OF BRAIN
& ITS FUNCTION

12. BRAIN CAN BE DIVIDED INTO …
THE BRAIN

14. FOREBRAIN OR
PROSENCEPHALON

15. Brain stem
Note that
this is not
under
classificatio
n of brain

16. THALAMUS: Receives
and directs sensory
information
HYPOTHALAMUS:
Homeostasis, emotion,
thirst, hunger, controls
the pituitary.
Pituitary and pineal
are the endocrine
glands associated
with the
diencephalon.

17. CONSISTS OF…
FORE BRAIN

19. • CEREBRUM
LARGEST
PROMINENT
HEMISPHERES
CORPUS CALLOSUM
CEREBRUM

20. Associated with movement,
orientation, recognition,
perception of stimuli
Associated with reasoning,
planning, movement, emotions,
and problem solving
Associated with
visual processing
Associated with perception and
recognition of auditory stimuli,
memory, and speech

21. 
CEREBRUM

22. CONVOLUTED
GYRI
SULCI
CEREBRUM

23. Cerebral Cortex
Cerebral
Cortex
Cerebral Cortex - The outermost layer of
gray matter making up the superficial
aspect of the cerebrum.
http://www.bioon.com/book/biology/whole/image/1/1-6.tif.jpg

24. hat are found
in the Brain are of two types

26. LOBES OF CEREBRUM
Gyrus- highly
convoluted ridges on
the cerebrum
Sulcus-the groves on
the cerebrum

27. OLFACTORY LOBE
Olfactory lobe
Olfactory tracts.

28. CEREBRAL HEMISPHERES AND CORPUS
CALLOSUM
The corpus callosum is a wide bundle of white-matter made up of axons that facilitate
communication between the brain's hemispheres.

29.  CORPUS CALLOSUM
MYELINATED
CORPUS CALLOSUM
Corpus callosum
Corpus
Callosum

31. MID
BRAIN
It is a short, constricted portion of the
brain that connects the pons varoli and
cerebellum with the cerebrum
 Mid brain or Mesencephalon
connects the anterior region of brain to
the posterior region of brain.
 Therefore all nerves pass through this
region

32. MID
BRAIN
1. Optic lobes – Controls
vision
Location – on the dorsal side
of the midbrain
2. Cerebral peduncles

33. OPTICAL LOBE
OPTICAL LOBES

34. Two
cylindrical
fibre
bundles
formed by
ascending
and
descending
nerve tracts
that make
up the floor
of the brain,
joining the
fore brain to
the hind
brain &
spinal cord
It relays
the motor
impulses
from the
cerebral
cortex to
the pons
and spinal
cord, and
relays
sensory
impulses
from the
spinal cord
to the
thalamus.
CEREBRAL PEDUNCLES

36. (RHOMB
EN
CEPHAL
ON) Hind brain consists of …
1.Cerebellum
2.Pons &
3.Medulla oblongata

37. Part of the hind
brain.
HIND BRAIN
(RHOMBENCEPHALON)

38. BRAIN-
PONS AND
MEDULLA
PONS:
Function:
Motor control
and sensory
analysis
MEDULLA: Function: Maintaining vital body
functions, such as breathing and heart-rate

39. (RHOMBE
N
CEPHALO
N)
Cerebellum - It is present on the
dorsal region of the brain
Function
1.Maintains equilibrium and controls
posture
2.Regulates contraction of skeletal
muscles
3.It makes body movements smooth and
co-ordinated

40. HIND
BRAIN
Pons – Forms the part of a brain
stem at the floor of hind brain.
It connects fore brain to spinal
cord.
It is also a bridge of transverse
nerves tracts extending from
cerebrum to cerebellum

41. HIND
BRAIN
Medulla Oblongata- it is the
lowermost part of the brain located at
the base of skull.
It contains vital reflex centres such
as
cardiac centre,
respiratory centre, and
centre for swallowing, sneezing,
coughing and vomiting.

42. THANK YOU