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23 Cards in this Set
- Front
- Back
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embryonic precursor of smooth right atrium:
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resorbed right sinus venosus
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embryonic precursor of trabeculated rght atrium:
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primitive right atrium
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embryonic precursor of right ventricle inflow portion:
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Bulbus cordis (PRV)
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embryonic precursor of right ventricle outflow portion:
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Conus cordis (Prox outflow tract)
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embryonic precursor of left atrium smooth part:
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Resorbed pulmonary veins
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embryonic precursor of left atrium trabeculated part:
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primitive left atrium
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embryonic precursor of left ventricle inflow portion:
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Primitive left ventricle
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embryonic precursor of left ventricle outflow portion:
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Conus cordis (prox outflow tract)
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Origin of Interatrial Septum:
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-Septum Primum (from myocardial wall)
-Septum Secundum (from resorption of Rt sinus venosus) |
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Origin of IVS
-Muscular portion -Membranous portion |
Musc: Myocardial wall trabeculae
Memb: Cushion tissue form inferior AV cushions and Dorsal conus cushions |
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Origin of AV canal
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Fusion of Superior and Inferior endocardial cushions
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Origin of Conus Cordis
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Dorsal and Ventral Conus Ridges
(ECT) |
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Origin of Truncus Arteriosus
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Superior and Inferior Truncal Ridges
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Tissue that TA is derived from:
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-ECT
-Neural crest mesenchyme |
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What does TA become:
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Aortic/pulmonary valves
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Tissue origin of Aortic sac:
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neural crest mesenchyme
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IN the GI tract what does MESODERM give rise to?
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-Smooth muscle and CT of GI tract and mesenteries
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What type of mesoderm is this?
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splanchnic
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What does Ectoderm give rise to in the GI tract?
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Epithelial lining of glands of the oral cavity and anal tract.
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What does everything else in the GI tract come from?
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Endoderm
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What is a meckel's diverticulum?
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Failure of the vitelline duct to obliterate - or the yolk sac
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What does the vitelline duct do when it is normal?
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Connects the midgut to the yolk sac.
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What part of the intestine is meckel's diverticulum associated with?
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Ileum
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