Posterior intercostal arteries

Jump to: navigation, search
Artery: Posterior intercostal arteries
Gray530.png
The thoracic aorta, viewed from the left side. (Intercostals visible at right.)
Latin arteriae intercostales posteriores
Gray's subject #153 600
Source 1-2: supreme intercostal
3-11: thoracic   
Vein Posterior intercostal veins
Dorlands
/ Elsevier
    
a_62/12158328

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

Please Take Over This Page and Apply to be Editor-In-Chief for this topic: There can be one or more than one Editor-In-Chief. You may also apply to be an Associate Editor-In-Chief of one of the subtopics below. Please mail us [2] to indicate your interest in serving either as an Editor-In-Chief of the entire topic or as an Associate Editor-In-Chief for a subtopic. Please be sure to attach your CV and or biographical sketch.

The posterior intercostal arteries are arteries that supply blood to the intercostal spaces.

There are eleven posterior intercostal arteries on each side.

The right aortic intercostals are longer than the left, on account of the position of the aorta on the left side of the vertebral column; they pass across the bodies of the vertebrae behind the esophagus, thoracic duct, and azygos vein, and are covered by the right lung and pleura.

The left aortic intercostals run backward on the sides of the vertebrae and are covered by the left lung and pleura; the upper two vessels are crossed by the left superior intercostal vein, the lower vessels by the hemiazygos vein.

Opposite the heads of the ribs, the sympathetic trunk passes downward in front of them, and the splanchnic nerves also descend in front by the lower arteries.

Each artery then divides into an anterior and a posterior ramus.

A given posterior intercostal artery travels along the bottom of the rib with its corresponding posterior intercostal vein, as well as the intercostal nerve of the given space. The vein is superior to the artery, and the intercostal nerve is inferior to it.

External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.



Linked-in.jpg