Hindgut Flashcards
1
Q
What structures comprise the hindgut (5)
A
- L. 1/3 of transverse colon
- descending colon
- sigmoid colon
- rectum & upper part of anal canal
- epithelium of urinary bladder & most of urethra
2
Q
How can the large intestine be distinguished from the small
A
Omental appendices: small, fatty, peritoneal like projections
Hausta or sacculations: constrictions and bulges
- teniae coli: thickened bands of smooth muscle
3
Q
What is the appendix
A
Blind intestinal diverticulum with masses of lymphatic tissue
4
Q
Why is the lymphatic tissue in the appendix important
A
Important for GI tract as helps fight infection (this is why you often get infection here - appendicitis)
5
Q
What is the arterial blood supply of the hindgut (what’s its origin)
A
Inferior mesenteric artery
Origin: anterior branch of abdominal aorta (L3)
6
Q
What are the branches of the inferior mesenteric artery (3)
A
- L. Colic
- sigmoid
- superior rectal (terminal branch of mesenteric artery)
