Hormones of the GI tract Flashcards Preview

DEMS Pt 1 > Hormones of the GI tract > Flashcards

Flashcards in Hormones of the GI tract Deck (10)
1

What are the actions, cell of origin, and location of origin of Glucagon?

Actions: Stimulate glycogenolysis by hepatocytes and raises blood sugar levels.

Cell: A cells

Location: Stomach and small intestine

2

What are the actions, cell of origin, and location of origin of Somatostatin?

Actions: Inhibits release of hormones by neuroendocrine cells in its vicinity

Cell: D cells

Location: Stomach, small and large intestines

3

What are the actions, cell of origin, and location of origin of Serotonin and Substance P?

Actions: Increases peristaltic movement

Cell: EC cells

Location: Stomach, small and large intestines

4

What are the actions, cell of origin, and location of origin of Histamine?

Actions: Increases HCl secretion

Cell: ECL cells

Location: Stomach

5

What are the actions, cell of origin, and location of origin of Gastrin?

Actions: Stimulates HCl secretion, Induces gastric motility (esp contraction of pyloric region and relaxation of pyloric sphincter to regulate stomach emptying), Proliferation of regenerative cells in the stomach

Cell: G cells

Location: Stomach

6

What are the actions, cell of origin, and location of origin of Cholecystokinin?

Actions: Stimulates the release of pancreatic enzymes and contraction of the gall bladder

Cell: I cells (cholecystokIIIIIInin)

Location: Small intestine

7

What are the actions, cell of origin, and location of origin of Gastric Inhibitory Peptide?

Actions: Inhibits secretion of HCl

Cell: K cells

Location: Small intestine

8

What are the actions, cell of origin, and location of origin of Motilin?

Actions: Increases intestinal motility

Cell: Mo cells

Location: Small intestine

9

What are the actions, cell of origin, and location of origin of Secretin?

Actions: Stimulates release of bicarbonate rich fluid from the pancreas

Cell: S cells

Location: Small intestine

10

What are the actions, cell of origin, and location of origin of Vasoactive Intestinal Peptide?

Actions: Increases peristaltic action of small and large intestines, stimulates elimination of water and ions by GI tract

Cell: VIP cells

Location: Stomach, small and large intestines