pack

Question 1

What are the valves of houston?

Answer 1

Folds at the end of the rectum that slice the feces

Question 2

How are the three parts of the rectum covered by the peritoneum?

Answer 2

Upper 1/3 is covered from three sides except posterior

middle 1/3 is covered anteriorly only

Lowest 1/3 is not covered at all

Question 3

What are the 4 posterior relations to the rectum?

Answer 3

1. 2 bones (Sacrum and coccyx)
2. 2 muscles (Piriformis and coccygeus)
3. 2 nerves (symp. and Para)
4. 2 vessels (Median sacral & superior rectal)

Question 4

What type of branches does the ileocolic artery give off?

Answer 4

Superior and inferior

Question 5

What does the superior branch of the ileocolic artery anastmos with?

Answer 5

With the descending branch of the of the right colic artery

Question 6

What does the inferior branch of the ileocolic artery anastmose with?

Answer 6

With the superior mesentaric artery

Question 7

What are the branches that form from the anastomses between the inferior ileocecal artery and SMA?

Answer 7

1. Anterior and posterior cecal branches
2. appendicular artery (sometimes a branch of the posterior cecal)
3. Colic branches to the ascending colon
4. ileal branches to the terminal ileum

Question 8

What does the ascending branch of the right colic artery anastmose with?

Answer 8

The right branch of the middle colic artery

Question 9

What supplies the fore, mid, and hindgut?

Answer 9

Question 10

What does the ISA supply and from where to where?

Answer 10

Hindgut:

last 1/3 of the transverse colon till the middle of the anal canal