Upper Limb 4 - Station 1 Flashcards
6 muscles of superficial posterior forearm
brachioradialis extensor carpi radialis longus extensor carpi radialis brevis extensor digitorum extensor digiti minimi extensor carpi ulnaris
cord origin of radial nerve
posterior cord
roots of posterior cord
C5-T1
action of extensor carpi radialis longus and brevis
extension and abduction of the wrist
innervation of extensor carpi radialis longus
radial nerve
innervation of extensor carpi radialis brevis
deep branch of radial nerve
common innervation of all posterior forearm muscles
branches of radial nerve
attachments of brachioradialis
lateral supracondylar ridge of humerus to lateral distal end of radius
action of brachioradialis
weak elbow flexion that is strongest in mid prone position
innervation of brachioradialis
radial nerve
action of extensor digitorum
extends wrist and medial four fingers at MCP and IP joints
tendon of extensor digitorum passes under/over the extesor retinaculum
under
innervation of extensor digitorum
posterior interossesus nerve (radial nerve)
action of extensor digiti minimi
extends wrist and pinky finger at MCP and IP joints
action of extensor carpi ulnaris
extends and adducts wrist
muscles that extend of abduct the thumb
abductor pollicis longus
extensor pollicis longus
extensor pollicis brevis
deep layer of posterior forearm muscles
supinator
action of supinator
supinates forearm
innervation of supinator
deep branch of radial nerve
muscles innervated by the posterior interosseus nerve (radial)
extensor digitorum, extensor digiti minimi and extensor carpi ulnaris (most medial 3 superficial) and outcropping deep
superficial posterior forearm muscles from lateral to medial
brachioradialis extensor carpi radialis longus extensor carpi radialis brevis extensor digitorum extensor digiti minimi extensor carpi ulnaris
“outcropping” deep muscles of posterior forearm
abductor pollicis longs
extensor pollicis longus
extensor pollicis brevis
extensor indicis
innervation of all “outcropping” deep muscles
posterior interosseus nerve (radial)
what bone do all the “outcropping” deep muscles attach to proximally
radius
order of the “outcropping” deep muscles from lateral to medial
abductor pollicis longus
extensor pollicis brevis
extensor pollicis longus
extensor indicis
which muscle extends the thumb at the distal phalanx
extensor pollicis longus
which muscles extends the thumb at the proximal phalanx
extensor pollicis brevis
