adductor pollicis muscle Click to see full answer. Keeping this in consideration, what nerve does thumb adduction? ulnar Additionally, what is the origin of the adductor muscle of the thumb? The adductor pollicis has a transverse head and an oblique head. The transverse head originates from the third metacarpal bone, whereas the oblique head has its origin on the capitate bone and second and third metacarpals. Together they insert on the base of the proximal phalanx of the thumb and the dorsal aponeurosis. Considering this, what muscle does thumb abduction? abductor pollicis longus Is adductor Pollicis a thenar muscle?Another muscle that controls movement of the thumb is adductor pollicis. It lies deeper and more distal to flexor pollicis brevis. Despite its name, its main action is mainly rotation and opposition. It is not in the thenar group of muscles, so is supplied by the ulnar nerve.
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