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21 Cards in this Set
- Front
- Back
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What is the term for the de novo formation of blood vessels called?
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Vasculogenesis
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What forms from hemangioblasts within the splanchnic mesoderm of the yolk sac?
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Blood islands (think blood)
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As blood islands coalesce, what forms in the yolk sac?
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Vitelline arteries and veins
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Put the following steps of vascular development in order from the first to the last: paired aortic arches, vitelline veins, paired dorsal aortae, aortic sac
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vitelline veins, aortic sac, paired aortic arches, paired dorsal aortae
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What two vessels run along the cranio-caudal axis?
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Dorsal aortae and cardinal veins
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What blood vessels contribute oxygenated blood to the developing embryo?
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umbilical veins
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What aortic component leads out of the heart to the aortic arches during development?
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Aortic sac
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What does the left 4th arch eventually form?
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aortic arch
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What is the process of adjusting the aortic arches?
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Remodeling
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What does the 6th arch and their branches eventually form?
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Pulmonary arteries
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What shunt that sends blood from the pulmonary trunk to the aorta remains from the left aortic arches?
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Ductus arteriosus
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What does the ductus arteriosus form upon birth to block the bypass of the lungs?
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ligamentum arteriosus
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As the heart descends through the thorax, what nerves wrap around the 6th aortic arches?
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Recurrent laryngeal nerves
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What are the 3 unpaired arteries that serve the gut within the abdomen?
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Celiac trunk, superior mesenteric, inferior mesenteric
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What do the intersegmental branches of the thoracic region become?
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Intercostal arteries
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What do the intersegmental branches of the lumbar region become?
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Lumbar & lateral sacral arteries
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What do the umbilical arteries ultimately form during fetal development?
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internal iliac arteries
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Of the 3 pairs of embryonic vessels (cardinal, vitelline, and umbilical veins), which ones pass through the developing liver?
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Vitelline and umbilical veins
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What do the vitelline veins anastomose to form?
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Hepatic portal vein
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What happens to the right and left umbilical vein?
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Right umbilical vein degenerates and left closes to become ligamentum teres
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What happens to the ductus venosus at birth? Why?
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Closes to form the ligamentum venosum b/c the liver begins functioning.
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