palmaris brevis (muscle)

pal·mar·is bre·vis (mus·cle)

[TA] cutaneous muscle of hand; origin, ulnar side of central portion of the palmar aponeurosis; insertion, skin of ulnar side of hand; action, wrinkles skin on medial side of palm; nerve supply, ulnar. Synonym(s): musculus palmaris brevis [TA], short palmar muscle