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20 Cards in this Set
- Front
- Back
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Angioblasts
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Precursors of blood vessels
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Angiogenesis
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lengethening and remodeling of embryonic blood vessels
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Aortic Arches
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Paired arteries surrounding the pharynx, portions will go on to form great arterial vessels
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Blood Islands
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Clusters of cells in the yolk cells, connecting stalk and chorionic villi that form primitive blood vessels
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Cardiac Jelly
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Gelatenous extracellura matrix that forms middle layer of the heart tube
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Ductus Venosum
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Shunts most of the blood in the umbilical vein into Inferior Vena Cave. BY BYPASSING THE LIVER SINUSOIDS
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Hemangioblasts
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Earliest Precursors of blood cells
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Intusseption
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Incorporation of one structure into another
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Vaculogenesis
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formation of blood vessels in the embryonic disk
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During Cardiovascular development how do blood vessels develop?
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Blood Vessels develop within a developming organ. There is apoptosis. The vessels DO NOT migrate once developed, rather they develop in place
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Where do the endocardial Tubes develop?
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THe endocardial tubes develop in the splanchnopleure. (The surrounding sphere)
REMEMbER: these tubes are NOT the tree layers of the heart. Nor they produce Cardiac Jelly. Cardiac Jelly comes before the Endocardial tube. |
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During looping the largest portion of the Endocardial tube gives rise to?
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Left Ventricle
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what Morphological Event is required to separate the common AV canal into right and left canals?
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The AV canal enlarges and desplaces to the right so that is can communicate with both right and left ventricles.
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Where Does Ostium (FORAMEN) Secundum form perforations?
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Septum Premum
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The AV Valvle originates from?
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VENTRICULA MYOCARDIUM
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Malformations of the Endocardial Cushions can result in?
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Persistent AV canal
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The Conotruncal septum arises from the?
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Bulbar ridges
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In the Fetal Circulation where is the Superior vena cava directed to?
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Right Ventricle
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How is the coronary sinus formed?
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End of 4th week, bilateral veins. Three veins develop that deliver (shunt)blood from
left side of embryo to the right horn of sinus venosus. Right horn enlarges; volume of blood entering left horn diminishes, left horn reduced to the coronary sinus. |
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How is the sinus venarum formed?
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Three major veins deliver blood from left side of embryo to the right horn of sinus
venosus. Right horn enlarges, absorbed into right atrium, becomes smooth walled sinus venarum. |
