Large intestine Flashcards
1
Q
The Rectum is an
A
expandable organ for temporary storage of feces
2
Q
The rectum forms last
A
15 cm (6 in.) of digestive tract
3
Q
movement of fecal material into rectum triggers urge to defecate is in what place
A
The rectum
4
Q
Last portion of the rectum
A
anal canal
5
Q
anal columns
A
small longitudinal folds
6
Q
Internal anal sphincter
A
- Circular muscle layer of muscularis externa
- Has smooth muscle cells, not under voluntary control
7
Q
External anal sphincter
A
Encircles distal portion of anal canal
* A ring of skeletal muscle fibers, under voluntary control
8
Q
Physiology of the Large Intestineis less than
A
10% of nutrient absorption occurs in large
intestine
9
Q
Physiology of the Large Intestine prepares
A
fecal material for ejection from the body
