21. Locations of GI secretory cells Flashcards Preview

Gastrointestinal > 21. Locations of GI secretory cells > Flashcards

Flashcards in 21. Locations of GI secretory cells Deck (12):
1

• A patient presents with pallor and macrocytic anemia. She has atrophic gastritis and thus makes antibodies acting at which stomach cells?

Parietal cells (this is pernicious anemia)

2

• HCl and intrinsic factor are released by ____ cells in the ____ of the stomach.

Parietal; body

3

• A patient who received atropine would have ____ (increased/decreased) production of intrinsic factor.

Decreased

4

• ____ is produced by chief cells in the ____ of the stomach.

Pepsinogen; body

5

• Name three types of secretory cells found in the duodenum and their associated products.

I cells (cholecystokinin), K cells (glucose-dependent insulinotropic peptide [GIP], S cells (secretin

6

• Somatostatin is made by ____ cells in the ____ of the stomach.

D, antrum

7

• What influence does atropine have on the gastrointestinal secretory cells?

Blocks vagal stimulation of parietal cells only

8

• A patient is given a dose atropine. Would this decrease acid secretion?

No (the G cells are stimulated by gastrin-releasing peptide)

9

• Gastrin stimulates the production of which two substances?

Histamine (causes acid secretion) and intrinsic factor

10

• Name four substances that are secreted directly into the lumen of the stomach

Mucus, pepsinogen, intrinsic factor, and HCl

11

• Does gastrin stimulate the basal or apical surface of the parietal cells?

Basal surface (gastrin is secreted into circulation to stimulate enterochromaffin-like and parietal cells)

12

• What cells does gastrin act on to increase acid secretion through histamine release?

Enterochromaffin-like cells

Decks in Gastrointestinal Class (88):