Forearm Flexors Action and Innervation Flashcards
Pronator teres (ulnar head and humeral head) action
Pronates and flexes forearm (at elbow)
Flexor carpi radialis (FCR) action
Flexes and abducts hand (at wrist)
Pronator teres nerve innervation
median nerve (C6, C7)
Flexor carpi radialis (FCR) nerve innervation
Median nerve (C6, C7)
Palmaris longus nerve innervation
Median nerve (C7, C8)
palmaris longus action
flexes hand (at wrist) and tenses palmar aponeurosis
Flexor carpi ulnaris (humeral and ulnar head) action
flexes and adducts hand (at wrist)
FCU nerve innervation
Ulnar nerve (C7,C8)
What compose the superficial (first) layer of flexors
Pronator teres, FCR, Palmaris longus, FCU
what compose the intermediate (second) layer of flexors
Flexor digitorum superficialis
FDS (humero-ulnar head and radial head) nerve innervation
Median nerve (C7, C8, T1)
FDS (humero-ulnar head and radial head) action
flexes middle phalanges at proximal interphalangeal joint (IPJ) of middle four digits
acting more strongly, can flex proximal phalanges at metacarphophalangeal joints
what compose the deep (third layer) of flexors
Flexor digitorum profundus (FDP)
Flexor pollicis longus (FPL)
Pronator quadratus
FDP (medial part) nerve innervation
ulnar nerve (C8, T1)
FDP medial part action
flexes distal phalanges 4 and 5 at distal IPJ
