gastric function Flashcards

1
Q

Hvad udskiller nonpariteal celler

A

Na (dette nedsætte ved høj H sekretion)

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2
Q

Hvad udskiller parietal celler

A

H+ og intrisic factor

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3
Q

Hvad udskiller chief cells

A

pepsinogen (endopepsidase)

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4
Q

Hvad udskiller D-celler

A

somatostatin

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5
Q

Hvad udskiller ECL celler

A

histamin

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6
Q

Hvad udskiller G-celler

A

Gastrin

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7
Q

Drug der inhiberer K-H-pumpen i parietal celler?

A

Omeprazole

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8
Q

Effekt af gastrin

A

øger syre sekretion af parietal celler, frigivelse af histamin fra ECL celler, reguer mucosa vækst i corpus

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9
Q

Hvilket hormon ligner gastrin

A

cholecystekenin

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10
Q

Enteriske hormoner der regulerer syre sekretion

A

CCK, sekretin, prostaglanding, VIP, GIP, peptid YY

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11
Q

De tre faser af syresekretion ved måltid

A

Cephalisk-, Gastrisk- og interstitinal fase

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12
Q

Hvad er optimal pH for pepsin

A

1,8-3,5

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13
Q

Hvad beskytter maven mod syren

A

gastric diffusion barrier

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14
Q

Hvad stimulerer bikarbonat sekretion?

A

PGE2

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15
Q

Hvilke refleks typer findes i GI

A

Kort reflex: sensor i tarm lumen, lokal reflexbue til ENS
Lang reflex: vago-vagal reflex (tarm -> CNS)
Intenstine-intestinal reflex: sensor i ENS refleksbue i ENS

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16
Q

Hvordan stimuleres galdeblæren til hhv kontraktion og relaktion

A

CCK stim Ach (kontraktion) og VIP(relaktion)