Palmaris brevis muscle

The palmaris brevis muscle is a muscle in the palm of the hand that steadies the hand and assists with gripping.

Origin
The palmaris brevis originates from the flexor retinaculum in the wrist and the palmar aponeurosis.

Insertion
The palmaris brevis inserts into the skin of the palm.

Innervation
The palmaris brevis is innervated by the superficial branch of the ulnar nerve (C8 and T1).