Aortic arches

Revision as of 22:22, 8 August 2012 by WikiBot (talk | contribs) (Bot: Automated text replacement (-{{SIB}} + & -{{EH}} + & -{{EJ}} + & -{{Editor Help}} + & -{{Editor Join}} +))
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

Template:Infobox Embryology

WikiDoc Resources for Aortic arches

Articles

Most recent articles on Aortic arches

Most cited articles on Aortic arches

Review articles on Aortic arches

Articles on Aortic arches in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on Aortic arches

Images of Aortic arches

Photos of Aortic arches

Podcasts & MP3s on Aortic arches

Videos on Aortic arches

Evidence Based Medicine

Cochrane Collaboration on Aortic arches

Bandolier on Aortic arches

TRIP on Aortic arches

Clinical Trials

Ongoing Trials on Aortic arches at Clinical Trials.gov

Trial results on Aortic arches

Clinical Trials on Aortic arches at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Aortic arches

NICE Guidance on Aortic arches

NHS PRODIGY Guidance

FDA on Aortic arches

CDC on Aortic arches

Books

Books on Aortic arches

News

Aortic arches in the news

Be alerted to news on Aortic arches

News trends on Aortic arches

Commentary

Blogs on Aortic arches

Definitions

Definitions of Aortic arches

Patient Resources / Community

Patient resources on Aortic arches

Discussion groups on Aortic arches

Patient Handouts on Aortic arches

Directions to Hospitals Treating Aortic arches

Risk calculators and risk factors for Aortic arches

Healthcare Provider Resources

Symptoms of Aortic arches

Causes & Risk Factors for Aortic arches

Diagnostic studies for Aortic arches

Treatment of Aortic arches

Continuing Medical Education (CME)

CME Programs on Aortic arches

International

Aortic arches en Espanol

Aortic arches en Francais

Business

Aortic arches in the Marketplace

Patents on Aortic arches

Experimental / Informatics

List of terms related to Aortic arches

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]


This article focuses upon the multiple aortic arches present in the embryo. For the single structure present in the adult, see Aortic arch

Overview

The aortic arches are a series of six paired embryological vascular structures which give rise to several major arteries. They are ventral to the dorsal aorta.

Specific arches

Arches 1 and 2

The first and second arches disappear early, but the dorsal end of the second gives origin to the stapedial artery, a vessel which atrophies in humans but persists in some mammals. It passes through the ring of the stapes and divides into supraorbital, infraorbital, and mandibular branches which follow the three divisions of the trigeminal nerve. The infraorbital and mandibular arise from a common stem, the terminal part of which anastomoses with the external carotid.

On the obliteration of the stapedial artery this anastomosis enlarges and forms the internal maxillary artery, and the branches of the stapedial artery are now branches of this vessel.

The common stem of the infraorbital and mandibular branches passes between the two roots of the auriculotemporal nerve and becomes the middle meningeal artery; the original supraorbital branch of the stapedial is represented by the orbital twigs of the middle meningeal.

Arch 3

The third aortic arch constitutes the commencement of the internal carotid artery, and is therefore named the carotid arch.

Arch 4

The fourth right arch forms the right subclavian as far as the origin of its internal mammary branch; while the fourth left arch constitutes the arch of the aorta between the origin of the left carotid artery and the termination of the ductus arteriosus.

Arch 5

The fifth arch disappears on both sides.

Arch 6

The sixth right arch disappears; the sixth left arch gives off the pulmonary arteries and forms the ductus arteriosus; this duct remains pervious during the whole of fetal life, but is obliterated a few days after birth.

His showed that in the early embryo the right and left arches each gives a branch to the lungs, but that later both pulmonary arteries take origin from the left arch.

Additional images

External links

See Also



Template:Gray's Template:Development of circulatory system


Template:WikiDoc Sources