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Embryology of the heart

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the mesodermal germ layer

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two simple epithelial tubes

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Cardiac jelly

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3 bagian dr tabung jantung

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Perkembangan dr cranial &caudal portion

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Perkembangan dari bulbuscordis

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Conus cordis

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d-looping

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Conotruncal region

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Hystology of the heart

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Longitudional section ofcardiac muscle

c = capillaryID = intercalated disk

f = broblast nucleusn = cardiac muscle nucleus

B hi i di

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Branching in cardiacmuscle bre

br = branching of cardiac muscle bres

C ti f di

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Cross section of cardiacmuscle

bv = blood !esselc = capillaryCT = connecti!e tissuef  = broblast nucleus

n = cardiac muscle nucleus

L it di l ti f

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Longitudional section ofPurkinje bers

bv = blood !esselc = capillarycar = regular cardiac bresID = intercalated disksn = nuclei of Purkinje cells

C ti f P ki j

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Cross section of Purkinjebres

bv = blood !esselCT = connecti!e tissuen = Purkinje cell nucleus

R l di b i

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Regular cardiac bres incross section

bv = blood !esseln = nucleus of blood !essel

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Endocardium of atrium

end = endothelial cell nucleiEndo = endocardium!o = myocardium

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Endocardium of ventricle

end = endothelial cell nucleiEndo = endocardium!o = myocardium

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e"icardium

ad = adipose tissuebv = blood !esselnv = ner!e

!o = myocardium

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 "enkyuuu#