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Circuitul hepato-entero-hepatic

 
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bossutai

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Post Posted: 03-04-2014, 13:52:09 | Translate post to: ... (Click for more languages)

Vreau descrierea STRUCTURILOR COMPONENTE + fiecare etapa cu explicatii cu tot.

Pe langa asta mai vreau si anatomia ficatului pe baza unei rute (ca de exemplu): Cum ajunge o hematie de la vena porta la vena cava inferioara.



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ValenTyNo95

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Post Posted: 04-04-2014, 21:00:03 | Translate post to: ... (Click for more languages)

Ficatul este cel mai mare organ al corpului
(2,5% din greutate la adult); primeste 25% din
debitul cardiac prin artera hepatica si vena
porta.


FUNCTIILE FICATULUI


FUNCTIA DE EXCRETIE

FUNCTIA DE SINTEZA

FUNCTIA DE DETOXIFIERE

FUNCTIE ENDOCRINA
Funcþiile celulelor hepatice non-parenchimatoase
Tipul celulei
Funcþii
Celule Kupffer
-*** (particule > 0,1 μm) microorganismelor, celule moarte, celule tumorale,
eritrocite îmbãtrânite
-Endocitoza (endotoxine, complexe imune)
-Procesare antigen (sechestrare de antigen ºi prezentare)
-Citotoxicitate (producere superoxid, efecte antitumorale)
-Producere de molecule semnal pentru comunicare intercelularã (eicosanoizi, IL1 ºi 6,
TNFα, interferon α, β)
Celule
endoteliale
-Funcþie de barierã între sânge ºi hepatocite
-Preluare receptor-mediatã de HDL, LDL modificate
-Preluare receptor-mediatã de glicoproteine cu manozã, galactozã terminalã, transferinã,
ceruloplasminã, transcobalaminã
-Pinocitozã
-Prezentare de ectoenzime (lipazã)
-Sintezã de prostaciclinã, PGE2
, citokine
-Endocitozã (particule < 0,1 μm)
Celule ce
stocheazã
grãsimi (ITO)
-Stocare de vitamina A
-Sintezã de proteine ale matricei extracelulare
-Contractilitate, reglarea fluxului sanguin sinusoidal
-Expresia ºi secreþia factorului de creºtere
Celule Pitt
-Activeazã celulele natural killer protejând împotriva infecþiilor virale, celulelor tumorale
metastatice
SECRETIA BILIARA
 Bila este produsul de secretie al hepatocitelor
 Intervine in emulsionarea si absorbtia lipidelor
 Se secreta 500 ml/24 ore
 Capacitatea maxima de depozitare a veziculei
biliare este de 50-70 ml; bila se concentreaza
prin absorbtia apei din compozitia sa
 Bila veziculara este de 5-10 ori mai concentrata
decat cea hepatica
ROLURILE BILEI
 Intervine in absorbtia grasimilor favorizand
emulsionarea lor si absorbtia acizilor grasi;
 Intervine in absorbtia vitaminelor liposolubile;
 Constituie cale de excretie a unor substante
(Zn, Mg, colesterol);
 Are efecte laxative, prin actiunea stimulatoare
asupra motilitatii intestinale.
@Ceva mai detaliat poti gasi aici Click


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bossutai

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Post Posted: 10-04-2014, 18:58:14 | Translate post to: ... (Click for more languages)

Mersi pentru pdf. E chiar complet.


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ValenTyNo95

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Post Posted: 13-04-2014, 14:07:24 | Translate post to: ... (Click for more languages)

Imi pare bine ca ti-am fost de ajutor.

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