Flexor carpi radialis muscle
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| Flexor carpi radialis muscle | |
|---|---|
| Front of the left forearm. Superficial muscles. (Flexor carpi radialis and its tendon visible in blue.) | |
 | |
| Front of right upper extremity. (Flex. carp. rad. labeled at upper left.) | |
| Latin | musculus flexor carpi radialis |
| Gray's | subject #125 446 |
| Origin | medial epicondyle of humerus (common flexor tendon) |
| Insertion | Bases of second and third metacarpal bones |
| Artery: | ulnar artery |
| Nerve: | Median nerve |
| Action: | Flexion and abduction at wrist |
| Antagonist: | Extensor carpi radialis brevis muscle, Extensor carpi radialis longus muscle |
| Dorlands /Elsevier | m_22/12549030 |
In anatomy, flexor carpi radialis is a muscle of the human forearm that acts to flex and abduct the hand.
Origin and insertion
This muscle starts at the medial epicondyle of the humerus (as does flexor carpi ulnaris muscle) and attaches to the anterior side of the base of the 2nd metacarpal.
It runs just laterally of flexor digitorum superficialis, and the tendon of flexor carpi radialis can be seen on the anterior of the distal forearm.
On a person's distal forearm, right before the wrist, they will see either two or three tendons. Flexor carpi radialis is the most lateral (closest to the thumb) of these. (The most medial one is flexor carpi ulnaris, and the middle one, if it exists is palmaris longus.)
Nerve and artery
As are most of the flexors of the hand, FCR is innervated by the median nerve. It gets its blood from the ulnar artery.
Exercises
The muscle, like all flexors of the forearm, can be strengthened by exercises that resist its flexion. A wrist roller can be used and wrist curls with dumbbells can also be performed.
See also
Additional images
 Cross-section through the middle of the forearm. |
 Transverse section across distal ends of radius and ulna. |
 Transverse section across the wrist and digits. |
 The mucous sheaths of the tendons on the front of the wrist and digits. |
 The muscles of the thumb. |
 The muscles of the left hand. Palmar surface. |
External links
de:Musculus flexor carpi radialisfr:Muscle fléchisseur radial du carpehu:Orsócsonti csuklóhajlító izom ja:橈側手根屈筋sv:Flexor carpi radialis
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
