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My NBCE - GI Physiology > Endocrine Secretion from the Gut > Flashcards

Endocrine Secretion from the Gut Flashcards

1
Q

Where are G cells located?

A

In the pylori antrum of the stomach

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2
Q

What do G cells secrete?

A

gastrin

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3
Q

What does gastrin do?

A

Stimulates gastric motility

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4
Q

Gastrin stimulates parietal cells to secrete what?

A

HCl

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5
Q

What cells secrete Somatostatin?

A

D cells in stomach

Delta islet cells in pancreas

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6
Q

What does Somatostatin do?

A

Decreases pancreatic secretion

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7
Q

Somatostatin inhibits the effect of what?

A

Gastric acid secretion and gallbladder contraction

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8
Q

CCK is secreted from what cells?

A

I cells in the SI

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9
Q

What causes CCK to be secreted?

A

Presence of fat in the duodenum

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10
Q

What does CCK do to the gallbladder?

A

Stimulates contraction and release of bile

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11
Q

CCK relaxes what?

A

Sphincter of Oddi and the lower (cardiac) sphincter

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12
Q

CCK inhibits what?

A

Gastric emptying

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13
Q

CCK also stimulates what from pancreas?

A

Pancreatic enzyme secretion

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14
Q

Secretin is secreted by what cells?

A

S cells in the intestinal crypts of Lieberkuhn

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15
Q

What does secretin do?

A

Stimulates the release of bicarbonate from the pancreass

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16
Q

What does secretin decrease?

A

Decreases gastric acid secretion

17
Q

Gastric inhibitory peptide is secreted by what cells?

A

K cells in the SI

18
Q

GIP inhibits what?

A

Effect of gastrin on the parietal cells in the stomach

19
Q

What endocrine secretion resembles Glucagon?

A

Glucagon-like peptide

20
Q

Glucagon-like peptide is secreted by what cells?

A

K cells in the duodenum AND jejunum

21
Q

Grehlin is secreted by what cells?

A

P cells in the stomach

22
Q

Grehlin is increased when? Decreased when?

A

Increased before meals

Decreased after meals

23
Q

Motilin is secreted by what cells?

A

M cells in the duodenum

24
Q

What does motilin control?

A

Cyclical movement of the gut

25
Q

Motilin is increased in what state?

A

Increased in the fasting state

My NBCE - GI Physiology (9 decks)

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