Anatomy of the Hand Flashcards
aBductor pollicis brevis
Action: palmar aBduction
Nerve: median nerve
Muscle Group: intrinsic muscles
opponens pollicis
Action: opposition
Nerve: median nerve
Muscle Group: intrinsic muscles
flexor pollicis brevis (superficial head)
Action: thumb MCP flexion
Nerve: median nerve (ulnar nerve for deep head)
Muscle Group: intrinsic muscles
lumbricals (radial side)
Action: MCP flexion and extension of IP joints
Nerve: median nerve
Muscle Group: intrinsic muscles
aBductor digiti minimi
Action: aBduction of the 5th digit (pinky finger)
Nerve: ulnar nerve
Muscle Group: intrinsic muscles
opponens digiti minimi
Action: 5th digit opposition
Nerve: ulnar nerve
Muscle Group: intrinsic muscles
flexor digiti minimi
Action: flexion of MCP joint and opposition of 5th digit
Nerve: ulnar nerve
Muscle Group: intrinsic muscles
aDDuctor pollicis
Action: aDDucts CMC joint of thumb
Nerve: ulnar nerve
Muscle Group: intrinsic muscles
lumbricals (ulnar side)
Action: MCP flexion and extension of IP joints of digits IV and V
Nerve: ulnar nerve
Muscle Group: intrinsic muscles
palmar interossei
Action: aDDuction and assistance with MCP flexion and extension of IP joints of digits II through V
Nerve: ulnar nerve
Muscle Group: intrinsic muscles
dorsal interossei
Action: aBduction and assistance with MCP flexion and extension of IP joints of digits II through V
Nerve: ulnar nerve
Muscle Group: intrinsic muscles
flexor digitorum superficialis (FDS)
Action: flexion of the PIP joints
Nerve: median nerve
Muscle Group: extrinsic flexor muscles
flexor digitorum profundus (FDP)
Action: flexion of DIP joints of digits II and III
Nerve: median nerve
Muscle Group: extrinsic flexor muscles
flexor pollicis longus (FPL)
Action: flexion of IP joint of the thumb
Nerve: median nerve
Muscle Group: extrinsic flexor muscles
extensor digitorum communis (EDC)
Action: extension of MCP joints and contributes to extension of IP joints
Nerve: radial nerve
Muscle Group: extrinsic extensor muscles
