Palmaris brevis muscle

Palmaris Brevis Muscle

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Palmaris brevis muscle

The Palmaris brevis muscle is a thin, quadrilateral muscle, located in the human hand. It is one of the superficial muscles of the palm, and its primary function is to improve the grip on objects by increasing the contact of the skin with the object.

Anatomy

The Palmaris brevis muscle originates from the flexor retinaculum of the hand and the palmar aponeurosis, and inserts into the skin on the ulnar border of the hand. It is innervated by the superficial branch of the ulnar nerve.

Function

The primary function of the Palmaris brevis muscle is to tighten the skin on the ulnar side of the hand, which improves the grip on objects. This is particularly useful when holding onto small, round objects.

Clinical Significance

The Palmaris brevis muscle is often used in surgical procedures as a flap, due to its superficial location and good blood supply. It can be used to cover exposed tendons, nerves, and vessels in the hand.

See Also

• Hand muscles
• Flexor retinaculum of the hand
• Palmar aponeurosis
• Superficial branch of the ulnar nerve

External Links

• Wikimedia Commons has media related to Palmaris brevis muscle.