This document summarizes key anatomical features of the rectum and anal canal. It describes the rectum's length, curvature, blood supply, nerve supply and relations to surrounding structures. It discusses the anal canal's measurements and divisions. It also outlines the musculature including the internal and external anal sphincters. Clinical conditions involving the rectum and anal canal like hemorrhoids, anal fissures and fistulas are briefly mentioned.
This is an oblique intermuscular passage in the lower part of the anterior abdominal wall ,
Situated just above the medial half of the inguinal ligament
This is an oblique intermuscular passage in the lower part of the anterior abdominal wall ,
Situated just above the medial half of the inguinal ligament
neuronal organelles
the neuron contains all the regular organelles of the eukaryotic cells. however, rough endoplasmic
reticulum, free ribosomes and polyribosomes of the neurons are collectively referred to as the nissl
(chromophil) bodies (granules).
these organelles are responsible for the intense basophilia of the neuronal perikaryon and are absent in the
axon hillock and in the axon (see diagram 3.).
neurofibrils, neurofilaments, microtubules and microfilaments are widely distributed in the cell body, axon
and dendrites.
golgi complex and lysosomes are restricted to the cell body while mitochondria are widely distributed in all
parts of the neuron but are particularly abundant at the axonal terminals.
inclusion bodies:
the neuron also contains inclusion bodies, which have variable distribution in the nervous system, e.g.:
melanin pigments (neuromelanin) are found in the substantia nigra of the midbrain and locus coeruleus of
the pons in the brainstem
lipofuscin (lipochrome) pigments are found in the spinal cord, medulla oblongata, sensory and
sympathetic ganglia. they are stored in granules derived from lysosomes. lipofuscin appears from the age
of 8 and increases with age. they may appear in other nerve cells but never found in the purkinje cells of
the cerebellum.
other inclusion bodies include:
zinc metal in the hippocampus of the brain
iron metal in the occolomotor nucleus of the midbrain
calcium and magnesium salts (brain sand) in the pineal gland.
synaptic vesicles are membrane-bound sacs of neurotransmitter located at the boutons terminaux of axons.
the axon :( see diagram 3a and 3b)
the characteristic features of the axon are:
a.it arises from the region of the cell body called the axon hillock
b.it is often longer than the dendrites but of uniform diameter.
c.a typical neuron possesses only one axon.
d.its plasmalemma is called the axolemma and its cytoplasm the axoplasm.
e.it contains all neuronal organelles except nissl bodies and golgi complex.
f.may have collateral branches.
g.may be covered by myelin sheath for insulation and rapid conduction of impulses.
h.conducts impulses away from the cell body.
i.its terminal branches are called telodendria, which terminate in dilated terminals (boutons
terminaux) that are involved in formation of contact points called synapses.
j.the initial segment is often involved in inhibitory axo-axonal synapses.
the dendrite (see diagram 3.)
the characteristic features of the dendrite are:
a.it is often shorter than the axon and tapers from the cell body hence the diameter is not
uniform.
b.it has numerous branches.
neuronal organelles
the neuron contains all the regular organelles of the eukaryotic cells. however, rough endoplasmic
reticulum, free ribosomes and polyribosomes of the neurons are collectively referred to as the nissl
(chromophil) bodies (granules).
these organelles are responsible for the intense basophilia of the neuronal perikaryon and are absent in the
axon hillock and in the axon (see diagram 3.).
neurofibrils, neurofilaments, microtubules and microfilaments are widely distributed in the cell body, axon
and dendrites.
golgi complex and lysosomes are restricted to the cell body while mitochondria are widely distributed in all
parts of the neuron but are particularly abundant at the axonal terminals.
inclusion bodies:
the neuron also contains inclusion bodies, which have variable distribution in the nervous system, e.g.:
melanin pigments (neuromelanin) are found in the substantia nigra of the midbrain and locus coeruleus of
the pons in the brainstem
lipofuscin (lipochrome) pigments are found in the spinal cord, medulla oblongata, sensory and
sympathetic ganglia. they are stored in granules derived from lysosomes. lipofuscin appears from the age
of 8 and increases with age. they may appear in other nerve cells but never found in the purkinje cells of
the cerebellum.
other inclusion bodies include:
zinc metal in the hippocampus of the brain
iron metal in the occolomotor nucleus of the midbrain
calcium and magnesium salts (brain sand) in the pineal gland.
synaptic vesicles are membrane-bound sacs of neurotransmitter located at the boutons terminaux of axons.
the axon :( see diagram 3a and 3b)
the characteristic features of the axon are:
a.it arises from the region of the cell body called the axon hillock
b.it is often longer than the dendrites but of uniform diameter.
c.a typical neuron possesses only one axon.
d.its plasmalemma is called the axolemma and its cytoplasm the axoplasm.
e.it contains all neuronal organelles except nissl bodies and golgi complex.
f.may have collateral branches.
g.may be covered by myelin sheath for insulation and rapid conduction of impulses.
h.conducts impulses away from the cell body.
i.its terminal branches are called telodendria, which terminate in dilated terminals (boutons
terminaux) that are involved in formation of contact points called synapses.
j.the initial segment is often involved in inhibitory axo-axonal synapses.
the dendrite (see diagram 3.)
the characteristic features of the dendrite are:
a.it is often shorter than the axon and tapers from the cell body hence the diameter is not
uniform.
b.it has numerous branches.
Here is the powerpoint on relevent anatomy of multiple differentials for Inguinoscrtal swelling special for surgical diagnosis with very reliable References.
location, length, and relation of right an left ureter, raletion of male an female ureter, n physiological site of ureteric constriction, bloo supply an inerve supply of ureter, clinical sinificance of ureter with hysteriectpomy
Classification of glands.
Detailed microscopic structure of exocrine glands.
differences between serous and mucus acini.
Microscopic structure of Parotid, submandibular and sublingual glands.
These lecture slides, by Dr Sidra Arshad, offer a quick overview of physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
Knee anatomy and clinical tests 2024.pdfvimalpl1234
This includes all relevant anatomy and clinical tests compiled from standard textbooks, Campbell,netter etc..It is comprehensive and best suited for orthopaedicians and orthopaedic residents.
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
Explore natural remedies for syphilis treatment in Singapore. Discover alternative therapies, herbal remedies, and lifestyle changes that may complement conventional treatments. Learn about holistic approaches to managing syphilis symptoms and supporting overall health.
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
NYSORA Guideline
2 Case Reports of Gastric Ultrasound
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
Prix Galien International 2024 Forum ProgramLevi Shapiro
June 20, 2024, Prix Galien International and Jerusalem Ethics Forum in ROME. Detailed agenda including panels:
- ADVANCES IN CARDIOLOGY: A NEW PARADIGM IS COMING
- WOMEN’S HEALTH: FERTILITY PRESERVATION
- WHAT’S NEW IN THE TREATMENT OF INFECTIOUS,
ONCOLOGICAL AND INFLAMMATORY SKIN DISEASES?
- ARTIFICIAL INTELLIGENCE AND ETHICS
- GENE THERAPY
- BEYOND BORDERS: GLOBAL INITIATIVES FOR DEMOCRATIZING LIFE SCIENCE TECHNOLOGIES AND PROMOTING ACCESS TO HEALTHCARE
- ETHICAL CHALLENGES IN LIFE SCIENCES
- Prix Galien International Awards Ceremony
3. Rectum
• Rectum = ?
• Straight in quadrupeds
• Not straight in man
• But curved in A-P & Side
to side.
• Misnomer
Straight
4. Rectum
• Lower dilated part of large
gut lies in pelvis
• B/w Sigmoid colon and Anal
canal
• Devoid of taenia coli,
sacculations, appendices
epiploicae and mesentery
5. Ano-rectal Junction
Rectum – Extent & Course
Begins as continuation of
sigmoid colon
Opposite S3
Ends at a point: 2-3cm in
front & little below tip of
coccyx
Lies at level of apex of
prostate
23. 3rd Valve
Most important &
constant
Anterior & Right wall
Along concavity of
middle lateral curve
Nelaton’s Sphincter
S5, 5cm above Anus
Divide rectum in to
upper & lower part
24. Upper Chamber
Pre-allantoic hind gut
May contain faeces
without reflex act of
defaecation
Lower Chamber
Endodermal Cloaca
Entry of faeces – Start
defaecation
27. • Support weight of faeces
• Prevent passage of
instrument
• Rectal washing should be
done in left lateral
position
• To prevent injury to
3rd valve
Importance of Valves
29. Arterial Supply Superior rectal artery
Posterior View
Continuation of IMA
Principal artery of
rectum
Entire mucosa and
upper musculature
Straight vessels arise
from plexus –
anastomose with
inferior rectal artery
30. Arterial Supply Middle rectal artery
Posterior View
Branch of Anterior
division of Internal
Iliac Artery
Supply lower part
31. Arterial Supply Inferior rectal artery
Posterior View
Branch of Internal
Pudendal Artery
Supply peri-anal skin
& Sphincter ani
32. Arterial Supply Median Sacral artery
Posterior View
Branch of Aorta
Supply posterior wall
of Ano-rectal
Junction
37. • Pelvic floor by Levator ani muscles
• Fascia of Waldeyer
• Lateral ligaments of the Rectum
• Rectovesical fascia of Denonvillers
• Pelvic peritoneum
• Perineal body with its muscles
• Pelvi-rectal & Ischio-rectal fat
Support of Rectum
39. Downwards & Backwards
Anal Canal – Extent & Course
Begins at ano-rectal jn
At a point 2-3cm in front &
little below tip of coccyx
Opens at anal orifice –
4cm below & in front of tip
of coccyx
Terminal part of Large Intestine
40. Anal Canal – Pecularities
• Ant wall shorter
• Surrounded by Sphincter
Ani
• Tone of it close the anal
canal
• Opens only during
defaecation
42. Relations
• Anteriorly: Perineal body
Males: membranous urethra
bulb of penis
Females: lower end of vagina
• Posteriorly: Anococcygeal ligament
Tip of coccyx
• Laterally: Ischiorectal fossae
• All round: Sphincteric muscles, tone of which keeps
the anal closed...
46. Interior of Anal Canal
Divided in to 3 parts
Pectinate Line
Hilton’s White Line
Upper area
Intermediate area / Pecten
Lower area / Anal Verge
47. Upper Muscular
part
• 15 mm
• Endodermal origin
• Lined by semitransparent
mucous membrane
– Simple columnar /
Stratified columnar or
squamous
• Plum red due to?
48. Upper Muscular
part - Features
Anal Columns /
Columns of Morgagni
Permanent longitudinal
mucosal folds
Contains Radicals of
Sup rectal veins
Reduplication of mucous
membrane
49. Upper Muscular
part - Features
Anal Valves / Valves of Ball
Crescentic mucosal folds
Connect lower ends of
anal columns
Pectinate Line / Dentate Line
Upper surface
Lower surface
Injury – Anal Fissure
50. Importance of Pectinate Line
Divide canal in to Upper &
Lower Areas
Development
Arterial Supply
Pectinate Line / Dentate Line
Venous Drainage
Lymphatic Drainage
Nerve Supply
85% diseases starts here
51. Upper Muscular
part - Features
Anal Papillae
Epithelial processes
Remnant of anal
membrane
52. Upper Muscular
part - Features
Anal Sinuses
Recesses above valves
between anal columns
Foreign body
53. Upper Muscular
part - Features
Anal Glands
Open in floor of sinuses
Infection - Fistula
54. Intermediate area /
Area of Pectane
• 15 mm
• Ectodermal origin
• Anal column: Absent
• Bluish pink appearance
of mucosa
• St sq epithelium
• No sweat / Sebaceous
gland
55. Lower area / Anal Verge
• 8 mm
• Ectodermal origin
• True skin with
pigmentation
• Corrugation due to
corrugator cutis ani
• Course hairs
56. Intermediate area /
Area of Pectane
• Color contrast between
Bluish pink mucosa above
& black skin below
• Lies at lower end of
internal anal sphincter
White line of Hilton
66. Clinical Anatomy
• Digital Per Rectal Examination
• Proctoscopy/Sigmoidoscopy
• Prolapse of Rectum
• Neurological disturbances of Rectum
• Rectal incontinence
• Carcinoma of Rectum
• Piles/Haemorrhoids
• Anal Fissure/Fissure in ano
• Fistula in ano
69. Internal hemorrhoids:
• Tributary of sup rectal
• Above white line
• Generally painless
External hemorrhoids:
• Tributary of inf rectal
• Below white line
• Generally painful
Hemorrhoids / Piles
78. Fistula in Ano
A fistula-in-ano is a hollow tract lined with granulation tissue
connecting a primary opening inside the anal canal to a
secondary opening in the perianal skin.
Secondary tracts may be multiple and from the same primary
opening.