GI Histo II

Question 1

What is the function of the mucous neck cells of gastric glands?

Answer 1

secrete soluble mucous

Question 2

What is the function of chief cells (zymogenic cells) of gastric glands?

Answer 2

secrete pepsinogen

Question 3

What is the function of parietal cells (oxyntic cells) of gastric glands?

Answer 3

manufacture HCl and secrete intrinsic factor

Question 4

What is the function of enteroendocrine cells (APUD cells) of gastric glands?

Answer 4

diffuse neuroendocrine cells that secrete hormones. APUD stands for amine precursor uptake and decarboxylation.

Question 5

What is the function of stem cells of gastric glands?

Answer 5

stem cells in neck replace other cells of the gastric pit.

Question 6

What are the three levels of folding within the small intestine?

Answer 6

plicae
crypt-villus system
microvilli

Question 7

What are plicae of the small intestine?

Answer 7

folds of the mucosa, each with a submucosal core.

fold of mucosa and part of the submucosa

Question 8

What is the crypt-villus system of the small intestine?

Answer 8

• folds only of mucosa.
• contains a core of lamina propria
• crypts and villi consitute glands of the small intestine