The anal canal arises from the lower end of which structure?
2.
Name the section of the colon that is intraperitoneal and goes from the right colic (hepatic) flexure to the left colic (splenic) flexure
3.
The sigmoid arteries are a series of four loops of vessels resting on the sigmoid mesocolon that form an anastamosis with each other. Which artery does the last loop anastamose with?
A.
ileal artery
B.
superior rectal artery
C.
pontine artery
D.
inferior rectal artery
4.
Which is the only part of the large intestine the longitudinal fibres of taenia coli do not run along?
A.
transverse colon
B.
cecum
C.
rectum
5.
The intestinal mucosa in the anal canal changes to anal mucosa through transitional zone and merges with cutaneous skin. The colorectal zone equates the histological structure of which structure? - It is composed of simple columnar epithelium and has folds of mucous membrane filled with small arteries forming cushions in the wall
A.
rectum
B.
ascending colon
C.
liver
D.
transverse mesocolon
6.
The entire colon has three main characteristics, which are helpful when trying to distinguish it from the rest of the alimentary canal. Name the fatty pouches situated along the part of the peritoneum known as the omentum
A.
Taenia coli
B.
haustra
C.
epiploic appendix
7.
The external anal sphincter muscle surrounds the anal canal. It is in close relationship to what muscle? Note -- it is part of levator ani muscle which encircles the rectum from behind and thus forms a bending closure
8.
Name the 2 branches of the inferior mesenteric artery supplying the descending colon
A.
dorsal pancreatic
B.
splenic
C.
sigmoid
D.
left colic
9.
Which nerves innervate the sigmoid colon?
10.
Where does the venous blood from the ascending colon drains through the ileocolic vein and right colic vein into?
11.
The anal canal is an important continence organ. It is surrounded by a muscular sphincter which tightly closes the lumen. Which sphincter surrounds the anal canal like a clamp? It is in close relationship to the puborectalis muscle
A.
external urethral sphincter
B.
external anal sphincter
C.
internal anal sphincter
12.
The right and left branches of which artery forms anastomoses with the ascending branch of the right colic artery and the ascending branch of the left colic artery, respectively?
