What is the extensor carpi radialis longus?
The extensor carpi radialis longus (ECRL) is a muscle in your forearm that works in conjunction with the other muscles and tendons in your arm to help move your wrist and hand. It is in the same muscle family as the extensor carpi radialis brevis (ECRB).
What is the action of the extensor carpi radialis brevis muscle?
The extensor carpi radialis brevis works in conjunction with the extensor carpi radialis longus to extend and abduct the wrist. In comparison to the extensor carpi radialis longus, the extensor carpi radialis brevis is shorter in length and is partially covered by it.
What is the action of extensor carpi radialis longus and brevis on the wrist joint?
Extensor carpi radialis longus primarily acts on the wrist joint to produce two major actions: Wrist extension by working synergistically with extensor carpi radialis brevis and extensor carpi ulnaris. Hand abduction (radial deviation), with the help of flexor carpi radialis.
What does extensor carpi mean in anatomy?
In human anatomy, the extensor carpi ulnaris is a skeletal muscle located on the ulnar side of the forearm. The extensor carpi ulnaris acts to extend and adduct at the carpus/wrist from anatomical position.
What is Carpi radialis?
The flexor carpi radialis muscle is a long, superficial muscle of the forearm that belongs to the anterior muscle group and lies in the first layer. It is a relatively thin muscle located on the anterior part of the forearm. It arises in the humerus epicondyle, close to the wrist area.
Is extensor carpi radialis longus and brevis?
Extensor carpi radialis brevis is a fusiform muscle found in the lateral part of the posterior forearm. Together with anconeus, brachioradialis, extensor carpi radialis longus, extensor digitorum, extensor digiti minimi and extensor carpi ulnaris, it belongs to the superficial forearm extensor group.
What is this carpi radialis brevis?
In human anatomy, extensor carpi radialis brevis is a muscle in the forearm that acts to extend and abduct the wrist. It is shorter and thicker than its namesake extensor carpi radialis longus which can be found above the proximal end of the extensor carpi radialis brevis.
What does longus mean in anatomy?
long
a Latin word meaning “long,” used in the medical names and descriptions of some muscles.
What does the extensor muscle do?
extensor muscle, any of the muscles that increase the angle between members of a limb, as by straightening the elbow or knee or bending the wrist or spine backward. The movement is usually directed backward, with the notable exception of the knee joint.
What does radialis mean in anatomy?
radialis (plural radiales) (anatomy) A radial muscle, artery, or nerve.
Together with anconeus, brachioradialis, extensor carpi radialis longus, extensor digitorum, extensor digiti minimi and extensor carpi ulnaris, it belongs to the superficial forearm extensor group. Crossing the elbow and wrist joints from their posterior aspects, these muscles produce extension at one or both of these joints.
What nerve innervates the extensor carpi radialis longus?
Extensor carpi radialis longus receives innervation from the radial nerve, with contributions mainly from spinal nerves C5-C8. The radial nerve is a branch of the brachial plexus .
Where does the radialis brevis become a tendon?
One of the three muscles of the radial forearm group, it initially lies beside the brachioradialis, but becomes mostly tendon early on. Passing between the brachioradialis and the extensor carpi radialis brevis, this tendon continues into the second tendon compartment together with the latter muscle.
Where is the extensor carpi ulnaris located?
It is an extensor muscle located superficially at the posterior compartment of the forearm. It originates from the common extensor tendon with extensor carpi ulnaris, extensor digiti minimi, and extensor digitorum at the Lateral epicondyle of humerus together .