Aortic arch

one member of a series of paired curved blood vessels that arise in the embryo from the ventral aorta, pass around the pharynx through the branchial arches, and join with the dorsal aorta to form the great vessels of the head and neck.
Historical Examples

Modifications of pattern in the aortic arch system of birds and their phylogenetic significance.
Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae Marion Anne Jenkinson

Left brachial artery arising from a common innominate trunk, instead of coming off separately from the aortic arch.
Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 Various

The head-cavity in the arch and its situation in relation to the aortic arch.
The Works of Francis Maitland Balfour, Volume IV (of 4) Francis Maitland Balfour

The second arch becomes the aortic arch, the third the left exterior carotid.
Evolution Joseph Le Conte

It may be well to observe that in birds the one aortic arch turns to the right, while in mammals it turns to the left.
Evolution Joseph Le Conte

aortic arch n.

The curved portion between the ascending and descending portions of the aorta, lying behind the manubrium and giving rise to the brachiocephalic trunk, the left common carotid, and the left subclavian arteries. Also called arch of aorta.

Any of several pairs of arterial channels encircling the embryonic pharynx in the mesenchyme of the branchial arches.


Read Also:

  • Aortic arch syndrome

    aortic arch syndrome aortic arch syndrome n. Obstruction of the branches of the aortic arch caused by thrombosis.

  • Aortic atresia

    aortic atresia aortic atresia n. The congenital absence of the normal valvular orifice into the aorta.

  • Aortic bulb

    aortic bulb aortic bulb n. The dilated first part of the aorta containing the aortic semilunar valves and the aortic sinuses.

  • Aortic body

    aortic body aortic body n. One of the small bilateral structures, attached to a small branch of the aorta near its arch, and containing chemoreceptors that respond primarily to decreases in blood oxygen concentration.

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