Gastrointestinal tract

Question 1

What are the 4 divisions of the duodenum

Answer 1

uperior - peritoneal
Descending - retroperitoneal
Horizontal – retroperitoneal
Ascending – retroperitoneal

Question 2

blood supply of jejunum and ileum

Answer 2

superior mesenteric artery

Question 3

Components of the large intestine

Answer 3

Caecum, Colon (Ascending, Transverse, Descending ,Sigmoid) Rectum and Anal canal (retroperitoneal, L3)

Question 4

Taeniae coli

Answer 4

three separate longitudinal ribbons of smooth muscle on the outside of the ascending, transverse, descending and sigmoid colons.

Question 5

Blood supply of the GI (3)

Answer 5

Celiac trunk (stomach, liver, spleen, and gall bladder (foregut derivatives)

Superior mesenteric: distal duodenum to middle of TVC (midgut derivatives)

Inferior mesenteric: half of TVC to most of rectum (hindgut derivatives)

marginal arteries

Question 6

venous drainage of GI

Answer 6

Superior mesenteric

Inferior mesenteric:

portal

Question 7

innervation of GI tract
name the 3 ganglia

Answer 7

Splanchnic nerves synapse at 3 ganglia:

Celiac:

T5 – T11

Superior mesenteric:

T10 – T11

Inferior mesenteric:

T12 – L2