Suprascapular artery
The arteria suprascapularis (from Latin : supra "over" and scapula "shoulder blade"; synonym: Arteria transversa scapulae ; English : suprascapular artery ) is an arterial branch from the thyrocervical trunk of the subclavian artery .
course
The artery suprascapular passes first through the anterior scalene muscle , and the phrenic nerve and under the pretracheal layer of cervical fascia according to caudal and lateral . It is covered by the sternocleidomastoid muscle . The vessel then crosses the subclavian artery and the brachial plexus and continues behind the collarbone and the subclavian muscle laterally to the upper edge of the shoulder blade . In this way, the artery crosses under the lower muscle belly of the omohyoideus muscle . Here the suprascapular artery gives off a branch, the ramus acromialis , to the rete acromialis , a vascular network at shoulder level ( acromion ).
When it arrives at the shoulder blade, the vessel pulls into the upper bone fossa ( fossa supraspinata ) via the ligamentum transversum scapulae superius , which separates the artery from the nerve of the same name, the nervus suprascapularis . Here you can find the artery between the bone and the supraspinatus muscle , which it supplies with a few branches.
Artery, vein and nerve suprascapular go to enter together through the notch spinoglenoidalis - a notch between the base of the scapula ( scapular spine ) and the shoulder blade neck ( collum scapulae ) - in the infraspinatus pit ( infraspinatus fossa ). There the arteria suprascapularis anastomoses with the arteria circumflexa scapulae , a branch of the arteria subscapularis, and several times with the arteria transversa colli .
More branches
- Ramus suprasternalis
- Ramus acromialis
function
The arteria suprascapularis supplies the musculus sternocleidomastoideus, the musculus subclavius, the musculi supraspinatus and infraspinatus , as well as parts of the clavicle, the anterior shoulder joint and the shoulder joint with arterial blood . The skin branches nourish parts of the skin in the upper chest area and over the acromion .
Individual evidence
- ↑ FCAT - Federative Committee on Anatomical Terminology: Terminologia Anatomica. Thieme, Stuttgart et al. 1998, ISBN 3-13-114361-4 .
literature
- Waldeyer : Human anatomy. 17th, completely revised edition. Walter de Gruyter, Berlin et al. 2003, ISBN 3-11-016561-9 , p. 883.