Costocervical trunk
From Wikipedia, the free encyclopedia
| Artery: Costocervical trunk | |
|---|---|
 |
|
| The internal carotid and vertebral arteries. Right side. (Costo-cervical labeled at bottom left.) | |
| Latin | truncus costocervicalis |
| Gray's | subject #148 585 |
| Source | subclavian |
| Branches | deep cervical highest intercostal |
| Dorlands/Elsevier | t_20/12826003 |
The costocervical trunk (superior intercostal artery) arises from the upper and back part of the subclavian artery, behind the scalenus anterior on the right side, and medial to that muscle on the left side.
Passing backward, it gives off the deep cervical artery, and, continuing as the supreme intercostal artery, descends behind the pleura in front of the necks of the first and second ribs, and anastomoses with the first aortic intercostal.
As it crosses the neck of the first rib it lies medial to the anterior division of the first thoracic nerve, and lateral to the first thoracic ganglion of the sympathetic trunk.
In the first intercostal space, it gives off a branch which is distributed in a manner similar to the distribution of the aortic intercostals.
The branch for the second intercostal space usually joins with one from the highest aortic intercostal artery.
This branch is not constant, but is more commonly found on the right side; when absent, its place is supplied by an intercostal branch from the aorta.
Each intercostal gives off a posterior branch which goes to the posterior vertebral muscles, and sends a small spinal branch through the corresponding intervertebral foramen to the medulla spinalis and its membranes.
[edit] Branches
[edit] 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 As such, some of the information contained herein may be outdated.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.
 |
This cardiovascular system article is a stub. You can help Wikipedia by expanding it. |
