GI Physiology

Question 1

lipids degraded into ?

Answer 1

fatty acids and glycerol

Question 2

Stomach: The gastric phase induces the greatest secretion of gastric acid and is mediated by ________, ________, and _________.

Answer 2

gastrin, acetylcholine, and histamine

Question 3

contains the oxyntic glands which contains the oxyntic and parietal cells which synthesize HCL (Fig. 36-1), peptic or chief cells which produce pepsinogen, and
mucous cells

B. Pyloric area – contains pyloric glands which produce mucus and G cells which secrete gastrin

Answer 3

a

Question 4

Stimulation of receptors for acetylcholine, gastrin, and histamine on the parietal cells leads to the activation of the proton pump and HCL formation

Answer 4

a

Question 5

food, esp high in fat, high protein meals and acidification of the gastric antrum stimulates release

Answer 5

a

Question 6

Prostaglandin E2 is important in the maintenance of the gastric mucosal barrier because it
stimulates HCO3- and mucus secretion, decreases gastric acid secretion, and enhances
mucosal blood flow.

Answer 6

a

Question 7

D. Pancreatic secretion responds to cephalic, gastric, and intestinal cues like gastric secretion

1) Cephalic phase is mediated by the vagus nerve
2) Gastric phase is mediated by cholecystokinin and secretin
3) Intestinal phase is mediated by cholecystokinin and secretin

Answer 7

a

Question 8

E. Response to feeding is biphasic

1) Phase 1 – stimulated by cholecystokinin and peaks 1 to 2 hours postprandially an is enzyme rich
2) Phase 2 – stimulated by secretin and peaks 8 to 11 hours postprandially and has a high HCO3- content

Answer 8

a

Question 9

Name of clamp to do pursestring with EEA

Answer 9

Furniss

Question 10

Where do adult teeth emerge with respect to deciduous?

Answer 10

medial and rostral to the deciduous tooth

Question 11

When should deciduous teeth be shed by

Answer 11

3-7 months