Hand muscles I - muscles of the ball of the little finger Hypothenary group (green) II - muscles of the ball of the thumb Thenar muscles (blue) III - Metacarpus muscles (red)
Little finger spreader - Abductor digiti minimi muscle
Short little finger flexor - M. flexor digiti minimi brevis
Short palm tendon tensioner - Muscle palmaris brevis
Little finger counteracting device - M. opponens digiti minimi
Thumb pull - Muscle abductor pollicis
Short thumb flexor - Muscle flexor pollicis brevis
Short thumb spreader - Muscle abductor pollicis brevis
Thumb counter - Muscle opponens pollicis
Spinal muscles - Lumbrical muscles
Palm side intermediate bone muscles - Palmar interossei muscles
Elbow-sided hand flexor - Flexor carpi ulnaris muscle
Spoke-sided hand flexor - Flexor carpi radialis muscle
First back intermediate bone muscle - Muscle interosseus dorsalis I
Long thumb stretcher - Extensor pollicis longus muscle
Short thumb stretcher - Extensor pollicis brevis muscle
Short spoke-side hand straightener - Extensor carpi radialis brevis muscle
Long spoke-side hand straightener - Extensor carpi radialis longus muscle
Backhand intermediate bone muscles - Dorsal interossei muscles
Finger extensor - Extensor digitorum muscle
Klenfingerstrecker - Extensor digiti minimi muscle