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10 Cards in this Set

  • Front
  • Back
Opponens Pollicis
Origin: Trapezium (gm); flexor retinaculum

Insertion:lateral border of 1st metacarpal

Action: opposition; thumb adduction
Abductor Pollicis Brevis
Origin:Trapezium (gm); scaphoid (navicular); transverse carpal ligament

Insertion: base of 1st phalange of thumb lateral

Action:thumb abduction; thumb opposition
Adductor Pollicis (two parts: tranverse and oblique)
Origin:distal 2/3 or 3rd metacarpal; base of 2nd and 3rd metacarpal and top of capitate

Insertion:inside base of 1st phalange of thumb

Action:thumb adduction; thumb flexion
Flexor Pollicis Brevis
Origin: inside of the base of the 1st metacarpal; trapezium; flexor retinaculum

Insertion:base of 1st phalange of thumb

Action:thumb flexion; thumb adduction; thumb opposition
Opponens Digiti Minimi
Origin:hamate; flexor retinaculum

Insertion:outside surface of 5th metacarpal

Action:little finger/thumb opposition; little finger adduction; little finger flexion
Abductor Digiti Minimi
Origin:pisiform and tendon of flexor carpi ulnaris which inserts on the hamate

Insertion: base of 1st phalange of little finger

Action:abduction of the little finger; flexion of the little finger
Flexor Digiti Minimi Brevis
Origin:Hamate and flexor retinaculum

Insertion:base of 1st phalange of the little finger outside

Action:little finger flexion; little finger opposition
Dorsal Interossei (4)
Origin:Adjacent sides of all 5 metacarpals except extreme lateral and medial sides (8 Os)

Insertion:Base of 1st phalange of 2nd,3rd,4th fingers (middle finger both sides)

Action:Abducts fingers 2 and 4; finger extension through tendon of extensor digitorum
Palmar Interossei
Origin:2nd,4th, and 5th metacarpals facing middle finger

Insertion:base of 2,4,5 fingers facing middle finger

Action:finger adduction; finger flexion
Lumbricales (4)
Origin:4 tendons of flexor digitorum profundus above carpal/metacarpal junction

Insertion:Tendons of FDP AND posteriorly on the tendons of the extensor digitorum communis (EDC)

Action:finger flexion through the tendons of FDP; finger EXTENSION through the tendons of EDC