Dorsal aorta

Dorsal aortae
Human embryo of about fourteen days, with yolk-sac. (Dorsal aorta labeled twice at left.)
Profile view of a human embryo estimated at twenty or twenty-one days old. (Dorsal aorta labeled at center left.)
Details
Carnegie stage	9
Gives rise to	Descending aorta
System	Circulatory system
Identifiers
Latin	aortae dorsales
TE	E5.11.2.1.3.0.1
Anatomical terminology

The dorsal aortae are paired (left and right) embryological vessels which progress to form the descending aorta.^[1] The paired dorsal aortae arise from aortic arches that in turn arise from the aortic sac.

Each primitive aorta anteriorly receives 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 aortae 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.

References

External links

• Embryology at Temple Heart98/heart97a/sld017
• Embryology at UNSW Notes/git
• cardev-009—Embryo Images at University of North Carolina