Thenar

Anterior hand, thumb side

Flexor Pollicis Brevis - Origin

Anterior radial shaft

Flexor Pollicis Brevis - Insertion

Proximal phalanx of the thumb

Flexor Pollicis Brevis - Action

Flexion of the thumb

Flexor Pollicis Brevis - Innervation

Medial nerve

Hypothenar

Anterior hand, pinky side

Abductor Digiti Minimi - Origin

Pisiform

Abductor Digiti Minimi - Insertion

Proximal phalanx of the 5th finger

Abductor Digiti Minimi - Action

Abduction of the 5th finger

Abductor Digiti Minimi - Innervation

Ulnar nerve

Opponens Digiti Minimi - Origin

Hook of the hamate

Opponens Digiti Minimi - Insertion

Metacarpal V

Opponens Digiti Minimi - Action

Opposition of the 5th finger

Opponens Digiti Minimi - Innervation

Ulnar nerve

Lumbricals (4) - Origin

Flexor digitorum profundus tendon

Lumbricals (4) - Insertion

Posterior proximal phalanges of fingers 2-5

Lumbricals (4) - Action

Flexion of the fingers

Lumbricals (4) - Innervation

Median nerve

Dorsal Interossei (4) - Origin

Posterior metacarpals

Dorsal Interossei (4) - Insertion

Proximal phalanges

Dorsal Interossei (4) - Action

Abduction of the fingers

Dorsal Interossei (4) - Innervation

Ulnar nerve

Palmar Interossei (3) - Origin

Anterior metacarpals (II, IV, & V)

Palmar Interossei (3) - Insertion

Anterior proximal phalanges

Palmar Interossei (3) - Action

Adduction of the fingers

Palmar Interossei (3) - Innervation

Ulnar nerve