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Dorsal aorta

Dorsal aorta
Profile view of a human embryo estimated at twenty or twenty-one days old. (Dorsal aorta labeled at center left.)
Latin aorta dorsalis
Gray's subject #135 506
Carnegie stage 9

Each primitive aorta receives anteriorly a vein—the vitelline vein—from the yolk-sac, and is prolonged backward on the lateral aspect of the notochord under the name of the dorsal aorta.

The dorsal aortæ give branches to the yolk-sac, and are continued backward through the body-stalk as the umbilical arteries to the villi of the chorion.

The two dorsal aortae combine to become the descending aorta in later development.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Dorsal_aorta". A list of authors is available in Wikipedia.
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