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A&P 2 - Digestive System > Stimulation of Secretions > Flashcards

Stimulation of Secretions Flashcards

1
Q

three hormones that stimulate secretions by glandular cells

A

acetylcholine
gastrin
histamine

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2
Q

acetylcholine comes from what

A

cholinergic neurons

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3
Q

gastrin is released by what

A

G cells

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4
Q

histamine is secreted by what cells

A

enterochromaffin-like cells (ECL-cells)

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5
Q

where are enterochromaffin-like cells (ECL-cells) found

A

gastric mucosa

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6
Q

two phases of secretion

A

cephalic and gastric

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7
Q

when does the cephalic phase of secretion begin

A

anticipation of eating a meal

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8
Q

when does gastric phase of secretion begin

A

when food enters the stomach

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9
Q

what nervous system is stimulated in the cephalic phase of secretion

A

enteric

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10
Q

in the cephalic phase of secretion ______ is released and binds to receptors

A

acetycholine

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11
Q

when acetylcholine binds to receptors it causes which three cells to secrete

A

parietal cells
chief cells
G cells

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12
Q

gastrin travels to _____ cells and _____ cells

A

parietal
ECL (where histamine is released)

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13
Q

acetylcholine also triggers _______ release by _____ cells

A

histamine
ECL

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14
Q

histamine stimulates _______ cells to produce more H+ and Cl- ions

A

parietal

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15
Q

in the gastric phase of secretion, glandular cells are stimulated by what

A

stretching of stomach wall

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16
Q

in the gastric phase of secretion, peptides are formed by what

A

protein breakdown

17
Q

in the gastric phase of secretion, trigger what two reflexes to and from the brain

A

enteric and vagal

18
Q

in the gastric phase of secretion, what stimulates secretions

A

released acetylcholine

19
Q

in the gastric phase of secretion, what is released from stimulated secretions

A

histamine from ECL-cells, and gastrin from G cells

20
Q

in the gastric phase of secretion, gastrin stimulates more_______ to release from ECL cells

A

histamine

21
Q

in the gastric phase of secretion, HCl acid production does what

A

increases

22
Q

in the gastric phase of secretion, the stomach can be as acidic as what

A

pH 2.0

A&P 2 - Digestive System (20 decks)

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