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PBL > GI PHYS > Flashcards

GI PHYS Flashcards

1
Q

S Cells

A

duodenum, jejunum, ileum
secrete secretin
stimulated by acid and fat

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2
Q

Secretin

A

STIMULATES: pepsin secretion, pancreatic bicarb, biliary bicarb, growth of exocrine pancreas
INHIBITS: gastric acid secretion

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3
Q

G cells

A

antrum, duodenum, jejunum
secretes gastrin
stimulated by protein, distention, nerve
inhibited by acid

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4
Q

Gastrin

A

STIMULATES: gastric acid secretion, mucosal growth

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5
Q

I cells

A

Duodenum, jejunum, ileum
secretes Cholescystokinin
stimulated by Protein, fat and acid

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6
Q

CCK

A

STIMULATES: pancreatic enzyme secretion, pancreatic bicarb secreion, gallbladder contraction, growth of exocrine pancrease
INHIBITS: gastric EMPTYING

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7
Q

K cells

A 
Duodenum and jejunum
secretes GLIP (glucose dependent insulin ionotropic peptide)
stimulated by: Protein Fat Carb
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8
Q

GLIP

A

STIMULATES: insulin release
INHIBITS: gastric acid secretion

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9
Q

M cells

A

duodenum and jejunum
secretes Motilin
stim by fat acid nerve

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10
Q

Motilin

A

STIMULATES: gastric motility, intestinal motility

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11
Q

gastrocolic reflex

A

signals from stomach causes evacuation of colon

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12
Q

enterogastric reflex

A

signal from colon and SI inhibit stomach motility and stomach secretion

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13
Q

coloileal reflex

A

reflex from colon inhibits emptying of ileal content into colon

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14
Q

receptive relaxation

A

gut relaxes several centimeters towards anus from distention

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15
Q

What 3 chemicals directly stimulate parietal cells to secrete acid and act in a multiamplificative way

A

Acetylcholine, histamine, gastrin

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PBL (19 decks)

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