Action.

Muscle.

Origin.

Insertion.

Nerve-supply.

Flexion

Flexor sublimis digitorum

See Wrist-Joint

Flexor profundus digitorum

See Wrist-Joint

Lunibricales

Four muscles arising from the tendons of flexor profundus digitorum

Two radial ones

From the radial sides of the tendons for the index and middle fingers

Similar to the dorsal interosseous muscle. See Thumb-Joints

Median

Two ulnar ones

From the adjacent sides of the second and third, and third and fourth tendons

Similar to the dorsal interosseous muscle. See Thumb-Joints

Ulnar

Intcrossei palmar

Three ; the first from the ulnar side of the second metacarpal, the two others from the radial side of the fourth and fifth metacarpals respectively

Ditto

Ulnar

Dorsal

Four, each arising from the adjacent sides of the metacarpal bone

Ditto

Ulnar

On the fifth finger only:

Flexor brevis minimi digiti

From ulnar part of anterior surface of annular ligament and hook of unciform

Ulnar side of base of first phalanx of little finger

Ulnar

Kxtension

Extensor communis digitorum

See Wrist-Joint

Extensor indicis

See Wrist-Joint

Kxtensor minimi digiti

See Wrist-Joint

Lumbricales

See Flexion

Interossei

See Flexion

Abduction from the ulnar side of the hand

Lumbri-cales

See Flexion

Flexor brevis minimi digiti

See Flexion

Opponens minimi digiti

Similar to flexor brevis minimi digiti

The lower three-fourths of the ulnar margin and palmar surface of the fifth metacarpal

Ulnar

From the middle line of the middle finger:

Dorsal interossei

See Flexion

Abductor minimi digiti

From the palmar surface of the pisiform bone

Ulnar side of base of first phalanx of little finger

Ulnar

Adduction to the middle line of the middle finger

Palmar interossei

See Flexion