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Set 8 3 Intestinal And Colonic Motility

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Question 1

(Multiple Choice)

Free
Relaxation of the internal anal sphincter is caused by

A) Nutrients in the ileum
B) Stretch of the ascending colon
C) Stretch of the ileum
D) Stretch of the stomach
E) Stretch of the sigmoid colon and rectum

Answer

Question 2

(Multiple Choice)

Free
Preganglionic parasympathetic nerves in the small intestine release

A) Acetylcholine onto muscle cells
B) Acetylcholine onto neurons in the myenteric plexus
C) Norepinephrine onto muscle cells
D) Norepinephrine onto neurons in the myenteric plexus
E) VIP and NO onto m uscle cells

Answer

Question 3

(Multiple Choice)

Free
The groups of neurons between the outer longitudinal and inner circular muscle layers is the

A) Myenteric plexus
B) Submucosal plexus
C) Interstitial cells of Cajal
D) Celiac ganglion
E) Inferior mesenteric ganglion

Answer