Anatomy Flashcards
• Small & large intestine has 4 layers mention them ?
Peritoneal , Muscular , Submucosal , Mucosal
The Small intestine Has Three Parts
Duodenum , Jejunum , Ileum
The jejunum and ileum measure about ?
20 ft (6 m) long
The coils of jejunum and ileum are freely mobile and are attached to the posterior abdominal wall by ?
fan-shaped fold of peritoneum known as the mesentery of the small intestine
Contents of the mesentery of small intestine (3)
The branches of the superior mesenteric artery and vein
Lymphatic vessels & lymphatic nodes
nerves
Jejunum vs ileum
Wall \ Thicker wall ; thinner wall
Vasa recta \ long ;short
Diameter \ wider ; smaller
Plicae circularis\ larger ; smaller
Lymphatic \ No or few ;peyer’s patches
Parasympathetic fibers of jejumum and ileum is derived from ?
Posterior vagal trunks
sympathetic fibers of jejumum and ileum originate from ?
T8_T10
The appendix
Blind ended tube connected to the cecum length 3_20
Appendix function in adult
Immune functions
Appendix function during early years of development
Lymphoid organ
help in maturation of B cells
And production of Ig A
Superior mesentric Ar branches (5)
Inferior pancreaticoduodenal Jejunal and ileal Ileocolic Right colic Middle colic
Inferior mesentric Ar branches (3)
Left colic
Sigmoid
Superior rectal
Rectum location
In the pelvis
From 3s to coccyx
Rectum flexures(3)
Sacral
Anorectal
Lateral( superior , inferior , intermediate )
Perineum
Inferior to pelvic and diaphragm
Between pubic symphysis ( anterior ) and coccyx( posterior )
The line that divide the Perineum in to two triangles(describe the route)
drawn transversely across in front of the ischial tuberosities
What are the two triangles?
Urogenital Triangle
Anal Triangle
Urogenital Triangle contains?(male, female )
contains the scrotum and penis in the male # Contains the clitoris urethra and vagina in the females
Anal Triangle contains ?
Contains the anus and ischiorectal fossae in both the male and the female
Contents of the Ischiorectal fossa - Anal (6)
- Ischiorectal pad of fat.
- Inferior rectal nerve and vessels.
- Posterior scrotal / labial nerve and vessels.
- Pudendal canal and its contents.
- Perineal branch of fourth sacral nerve.
- Perforating cutaneous branch of S2 , S3 nerve
Anal Canal (location )
Begins at end of rectum where puborectalis muscle narrows the ampulla
Pectinate line divide the anus into ? ( number)
2
Above Pectinate line ?
Visceral, columnar epithelium Anal columns
Below Pectinate line?
Somatic, stratified sq. Epithelium, Anal valves and sinuses