Pronator teres muscle
| Pronator teres muscle |
|---|
|
| origin |
| Epicondyle medialis humeri , processus coronoid ulnae |
| approach |
| Middle of the outside of the spoke ( pronator tuberosity ) |
| function |
| Pronation of the forearm |
| Innervation |
| Median nerve |
| Spinal segments |
| C6, C7 |
The pronator teres muscle ( Latin for "round inward turn") is a skeletal muscle . It runs along the front of the forearm (the one on which the palm of the hand lies) . It arises from the humerus and ulna and extends to the outer surface of the radius. The brachial artery and vein pass under the muscle . The median nerve ( ramus muscularis ) breaks through this muscle. The radial artery lies above and the ulnar artery below it.
function
The pronator teres muscle , as its name suggests, is responsible for the pronation of the forearm together with the pronator quadratus muscle .
In ungulates , the muscle is purely sinewy , since with them the radius and ulna are immovably fused together, so pronation is impossible.
Innervation
The pronator teres muscle is innervated by the median nerve.