Muscles of Forearm and Hand Actions Flashcards
extensor carpi radialis longus and brevis action
- wrist extension
- radial deviation
extensor digitorum action
- extends MCP joints
- extends the IP joints of the second through fifth digits
extensor digiti minimi action
- extends the MCP joint
- extends the IP joints of the little finger
extensor carpi ulnaris action
- extensor of the wrist
- ulnar deviation
abductor pollicis longus action
- 1st digit abduction
- extension at CMC joint
extensor pollicis brevis action
1st digit extension at MCP and IP joints
Extensor pollicis longus action
1st digit extension at MCP and IP joints
extensor indicis action
- 2nd digit extension
- wrist extension
supinator action
supination of forearm
pronator teres action
- pronation of forearm
- elbow flexion
flexor carpi radialis action
- wrist flexion
- radial deviation
palmaris longus action
flexion of wrist
flexor carpi ulnaris action
- wrist flexion
- ulnar deviation
flexor digitorum superficialis action
flexion of PIP joint of fingers
flexor pollicis longus action
flexion of distal phalanx of thumb
flexor digitorum profundus action
- wrist flexion
- flexes all joint to DIP in digits 2-5
pronator quadratus action
pronates forearm
abductor pollicis brevis action
abduction of thumb at MCP and CMC joint
flexor pollicis brevis action
flexion of thumb
opponens pollicis action
opposition of thumb
adductor pollicis action
adduction of thumb
abductor digit mini action
abduction of the finger at MCP joint
flexor digit minimi action
flexion of little finger
opponens digiti minimi action
- flexion of 5th metacarpal
- lateral rotation producing opposition
lumbricals of the hand action
- flexion of MCP
- extension at IP
dorsal interossei action
Abduction of 2nd, 3rd, 4th digits away from middle finger
palmar interossei action
- adduction of 2nd, 4th, 5th digits towards middle finger
- flexion of digit at MCP
- extension at IP
