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GI Physiology > Accessory Sensory Organs > Flashcards

Accessory Sensory Organs Flashcards

1
Q

Secretin

A

Stimulated by stomach acid in intestine -> SI secretin -> bicarbonate secretion from pancreas and liver -> neutralization of intestinal acid
Synthesized in cytoplasmic secretory granules of S cells, found mainly in mucosa of duodenum

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2
Q

GIP

A

Gastric inhibitory polypeptide
Cleaved by K cells found in mucosa of duodenum
In response to glucose induced hyperosmolarity of duodenum
GIP stimulates insulin secretion

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3
Q

CCK

A

Cholecystokinin
Stimulated by fa and aa
Releases pancreatic enzymes and contraction of gallbladder
Proteins: trypsin, chymotrypsin, and carboxypeptidase
Fat: lipase
Sugars: amylase
RNA/DNA: ribonuclease/deoxyribonuclease
Synthesized by I cells in mucosal epithelium of SI and secreted in duodenum
From preprocholecystokinin family

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4
Q

Endocrine pancreas

A

Alpha: glucagon
Beta: insulin
Delta: somatostatin
Epsilon: ghrelin

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4
Q

Liver disease symptoms

A 
Pale stool
Dark urine
Bilirubin deposits
Swelling
Excessive fatigue
Bruising
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GI Physiology (8 decks)

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