Palmaris longus muscle

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The palmaris longus muscle is a muscle in the forearm that flexes the wrist.


Triceps brachii muscle Biceps brachii muscle Brachioradialis muscle Pronator teres muscle Flexor carpi radialis muscle Palmaris longus muscle Flexor carpi ulnaris muscle Flexor digitorum superficialis muscle'The muscles of the forearm.'


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This is a left arm, with the palm of the hand facing toward the camera. The hand is almost fully supinated.

Contents

Origin

The palmaris longus originates from the humerus at the elbow on the common flexor origin of the medial epicondyle.

Insertion

The palmaris longus inserts into the wrist on the flexor retinaculum and the palmar aponeurosis.

Action

The palmaris longus assists in flexing the wrist and tenses the palmar aponeurosis.

Innervation

The palmaris longus is innervated by the medial and lateral cords of the median nerve (C7 and C8).

See also

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