Dictionary » A » Aortic arch

Aortic arch

Aortic arch

The curved portion between the ascending and descending parts of the aorta; it begins as a continuation of the ascending aorta posterior to the sternal angle, runs posteriorly and slightly to the left as it passes over the root of the left lung, and becomes the descending aorta as it reaches and begins to course along the vertebral column; it gives rise to the brachiocephalic trunk, the left common carotid and left subclavian arteries.

Any member of the several pairs of arterial channels encircling the embryonic pharynx in the mesenchyme of the brachial arches; there are potentially six pairs, but in mammals the fifth pair is poorly developed or absent. The first and second pairs are functional only in very young embryos; the third pair is involved in the formation of the carotids; the fourth arch on the left is incorporated in the arch of the aorta; the sixth pair forms the proximal part of the pulmonary arteries.

a series of arterial channels encircling the embryonic pharynx in the mesenchyme of the branchial arch's. There are potentially six pairs, but in mammals the fifth pair is poorly developed or absent. The first and second pairs are functional only in very young embryos; the third pair is involved in the formation of the carotids; the fourth arch on the left is incorporated in the arch of the aorta; the sixth pair forms the proximal part of the pulmonary arteries.

Synonym: arcus aortae.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Marey's Law

... following mechanism firstly we know that baroreceptors (which found in aortic arch and carotid sinus) are sensetive to changes in Blood pressure when the blood pressure ...

See entire post
by mostafaseb
Tue Oct 12, 2010 9:00 pm
 
Forum: Physiology
Topic: Marey's Law
Replies: 9
Views: 21783

Re: Marey's Law

... heart rate is dependent upon the baroreceptors, which are found in the aortic arch and the carotid sinus - Changes in HR from baroreceptor activation is due to reciprocal ...

See entire post
by guyface
Sat Jul 19, 2008 8:11 pm
 
Forum: Physiology
Topic: Marey's Law
Replies: 9
Views: 21783

the mixing of deoxygenated and oxygenated blood.

... septal, they still can pump out a high oxygenated blood into its aortic arch...It's due to the rythm of its heartbeat and the difference in time between accepting ...

See entire post
by victor
Mon May 22, 2006 12:30 pm
 
Forum: Human Biology
Topic: the mixing of deoxygenated and oxygenated blood.
Replies: 5
Views: 12543

embryo

... to "real life") 1)Allantois 2)Pharyngeal pouch 3)Hindbrain 4)Aortic arch 5)Common cardinal vein Thank you very much biology_06er

See entire post
by biology_06er
Mon Mar 27, 2006 5:20 am
 
Forum: Human Biology
Topic: embryo
Replies: 1
Views: 1550

SNS dilation of blood vessels

... pressure are sensed by peripheral baroreceptors in sinus caroticus and aortic arch and also by the stretch receptors in the atria which then secrete ANP In the case of high ...

See entire post
by sdekivit
Sat Jan 21, 2006 5:19 pm
 
Forum: Human Biology
Topic: SNS dilation of blood vessels
Replies: 1
Views: 2240


This page was last modified 21:16, 3 October 2005. This page has been accessed 3,839 times. 
What links here | Related changes | Permanent link