Musculus palmaris brevis

Musculus palmaris brevis is a small subcutaneous muscle that runs along the entire hypothenar.

Beginning:
 * ulnar edge of the palmar aponeurosis.

Attachment:
 * skin.

Innervation:
 * nervus ulnaris (ramus superficialis).

Note: Musculus palmaris brevis is the only muscle that is innervated by the ramus superficialis nervus ulnaris.