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Faringe esofag stomac
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STOMACUL
particularităţile
structurii mucoasei cardiei,corpului şi regiunii pilorice
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kkkSchemastructurii
pereteluistomacului
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GLANDELE
PROPRII
ALE
STOMACULUI
( fundul şi corpul
stomaculu i )
-tubulare simpleneramificate sau
ramificate:
-istmul
-coletul
-corpul
-fundul
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CELULĂPARIETALĂ
Multe
mitocondrii
Sistemul
canalicular
intracelular
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Celule enteroendocrine
G (gastrina)- efecte stimulatoare multiple (secretorii, moto-
rii, trofice)
( APUD – Amine Precursor Uptake and Decarboxilation )
D (somatostatina) – inhib ă secreţia gastrinei, inhibă
motilitatea stomacului
S (secretina) – inhibă motilitatea stomacului,
stimulează secreţia pancreasului, stimulează secreţia bilei, inhibă secreţia HCl, stimulează
secreţia pepsinei
EC (serotonina şi endorfina)- stimuleaz ă secreţia şi mo -
tilitatea
I (cholecistokinina) – inhibă secreţia şi motilitatea
stomacului
K ( peptida gastrică inhibitoare)-inhibă secreţia HCL
A(enteroglucagon) – stimulează metabolismul glicogenului
D1 (VIP-peptida vasoactivă) – dilată vasele, scade PA
ECL
( histamina )
stimuleaz ă secreţia celulelor parietale