GI 4 Flashcards

1
Q

true or false - the pancreas is both a endocrine and exocrine gland

A

true

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2
Q

the exocrine pancreas secretes… while the endocrine pancreas secretes….

A

HCO3 and hormones

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3
Q

where does the endocrine secretion occur

A

across the epithelial basolateral surface for diffusion into blood

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4
Q

the main pancreatic duct joins _____ before entering the duodenum

A

common bile duct

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5
Q

what does the pancreatic juices contain

A

isotonic alkaline
electrolytes
digestive enzymes

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6
Q

digestive enzymes are secreted by what type of cells

A

acinar cells

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7
Q

what do amylolytic enzymes do

A

digest starch into sugars

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8
Q

_____ cleaves trypsinogen to trypsin

A

enterokinase

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9
Q

where is the enterokinase located

A

embedded in the luminal membrane

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10
Q

trypsin activates which four inactive enzymes

A

chymotrypsinogen, pro-elastase, pro-carboxy peptidase A and B and prephospholipase A2

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11
Q

what is the name of the enzyme that hydrolyzes bonds at the C-terminal end

A

carboxypeptidase A and B

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12
Q

circulating secretin from the small intestine stimulates what …

A

pancreas and liver

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13
Q

which phase of pancreatic secretion has to do with regulation

A

intestinal phase

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14
Q

define alkaline tide

A

after a big meal… parietal cells in stomach produce lots of acid -> large amounts of HCO3 are pumped into the blood

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15
Q

define acid tide

A

after a big meal… duct cells in the pancreas produce lots of HCO3 -> large amounts of H ions are pumped into the blood

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