Abductor pollicis brevis
Origin
| Flexor retinaculum, scaphoid, and trapezium | Insertion
| Lateral side of base of proximal phalanx of thumb | Nerve
| Median | Action
| Abducts thumb |
Flexor pollicis brevis- Flexor retinaculum and trapezium
- Base of proximal phalanx of thumb
- Median
- Flexes thumb
- Opponens pollicis
Flexor retinaculum and trapezium
- Lateral side of first metacarpal
- Median
- Opposes thumb to other digits
Adductor pollicis
- Capitate and bases of second and third metacarpals (oblique head); palmar surface of third
- metacarpal (transverse head)
- Medial side of base of proximal phalanx of the thumb
- Ulnar
- Adducts thumb
Palmaris brevis
- Medial side of flexor retinaculum, palmar aponeurosis
- Skin of medial side of palm
- Ulnar
- Wrinkles skin on medial side of palm
Abductor digiti minimi
- Pisiform and tendon of flexor carpi ulnaris
- Medial side of base of proximal phalanx of little finger
- Ulnar
- Abducts little finger
Flexor digiti minimi brevis
- Flexor retinaculum and hook of hamate
- Medial side of base of proximal phalanx of little finger
- Ulnar
- Flexes proximal phalanx of little finger
- Opponens digiti minimi
Flexor retinaculum and hook of hamate
- Medial side of fifth metacarpal
- Ulnar
- Opposes little finger
Lumbricals (4)
- Lateral side of tendons of flexor digitorum profundus
- Lateral side of extensor expansion
- Median (two Flex metacarpophal lateral) and angeal joints ulnar (two and extend medial)
- interphalangeal joints
Dorsal interossei (4) (bipennate)
- Adjacent sides of metacarpal bones
- Lateral sides of bases of proximal phalanges; extenso: expansion
- Ulnar
- Abduct fingers; flex metacarpophal angeal joints; extend interphalangeal joints
Palmar interossei (3) (unipennate)
- Medial side of second metacarpal; lateral sides of fourth and fifth metacarpals
- Bases of proximal phalanges in same sides as their origins; extensor expansion
- Ulnar
- Adduct fingers; flex metacarpophal angeal joints; extend interphalangeal joints
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