Histology MCQs/Development of Cardiovascular System



{In which vessel of the fetal circulation takes place pure arterial blood? + Umbilical vein before connection with portal circulation - Truncus pulmonalis - Descendent aota - Pulmonal veins
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{Majority of blood ejected to the truncus pulmonalis in fetal circulation continues into: - Pulmonary circulation + Ductus arteriosus - Ascendent aorta - Left atrium
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{Mesoblastic period of hematopoiesis is period of production of blood inside: - Intraembryonic mesoderm + Mesoderm of yolk sack - Liver and spleen - Bone marrow
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{What is an angiogenesis? - Formation of new vessels independent on other vessels + Sprouting of new vessels from older vessels - Maturation of the vascular wall - Maturation of the arterial wall
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{What is a vaskulogenesis? + Formation of new vessels independent on other vessels - Sprouting of new vessels from older vessels - Maturation of the vascular wall - Maturation of the venous wall
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{When are formed blood islands? - In the 2nd week + In the 3rd week - In the 5th week - In the 4th week
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{When the embryonic heart starts to beat? - Around 16th day + Around 21th day - Around 28th day - Around 35th day
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{Where starts development of the heart? (Where is the cardiogenic area)? + In cranial part of trilaminar germ disk - In middle part of trilaminar germ disk - In caudal part of trilaminar germ disk - In anterior wall of the yolk sack
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{Which statement about the fetal circulation is true? - Blood which is rich on oxygen and nutrients flows though the umbilical vein + In the cranial part of inferior caval vein flows mixed blood - Ductus arteriosus connects aorta with truncus pulmonalis - Ductus venosus is later stage of venous sinus
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