Forearm extensors, intrinsic hand muscles Flashcards
(48 cards)
Nerve: Posterior interosseus n.
Action: Abducts thumb
Nerve and Action of the Abductor pollicis longus m.
Nerve: Superficial branch of ulnar n.
Action: tightens skin on medial side of palm
Nerve and Action of the Palmaris brevis m.
Nerve: Radial n.
Action: extend wrist and abducts hand
Nerve and Action of the Extensor carpi radialis longus m.
Nerve: Posterior interosseous n.
Action: Extends small finger
Nerve and Action of the Extensor digiti minimi m.
When does the radial n. branch into the superfical and deep branches? Which one enters the supinator m.?
What is the n. called after emerging from the supinator?
It divides after it enters the forearm; The deep branch of radial n. enters supinator, and is called the posterior interosseous n. after it emerges.
What part of the DORSUM of the hand is supplied by the radial n.?
Everything except the medial third of the hand (that belongs to ulnar n.) and the nail beds (which belong to ulnar and median n.)
Nerve and Action of the 4 lumbrical m.’s
Nerve: Median n. for 2 lateral, Ulnar n. for 2 medial
Action: flex Metacarpophalangial joints, and extend IP joints
Nerve and Action of the abductor pollicis brevis m.
Nerve: Recurrent branch of median n.
Action: abducts thumb
Nerve and Action of the Extensor digiti minimi m.
Nerve: Posterior interosseous n.
Action: Extends small finger
Nerve: Deep branch of ulnar n.
Action: Flexes proximal phalanx of small finger
Nerve and Action of the Flexor digiti minimi m.
Nerve and Action of the opponens digiti minimi m.
Nerve: Deep branch of ulnar n.
Action: Opposes small finger
Nerve and Action of the Extensor carpi radialis longus m.
Nerve: Radial n.
Action: extend wrist and abducts hand
Nerve and Action of the Opponens pollicis m.
Nerve: Recurrent branch of median n.
Action: Opposes thumb to other digits
Nerve and Action of the Extensor carpi ulnaris m.
Nerve: Posterior interosseous n.
Action: Extends and adducts hand
Nerve and Action of the Flexor digiti minimi m.
Nerve: Deep branch of ulnar n.
Action: Flexes proximal phalanx of small finger
Nerve: deep branch of ulnar n.
Action: Abducts small finger
Nerve and Action of the abductor digiti minimi m.
Nerve: Median n. for 2 lateral, Ulnar n. for 2 medial
Action: flex Metacarpophalangial joints, and extend IP joints
Nerve and Action of the 4 lumbrical m.’s
Nerve and Action of the Anconeus m.
Nerve: Radial n.
Action: Extend forearm
Nerve: Radial n.
Action: Flexes forearm
Nerve and Action of the Brachioradialis m.
Nerve: Posterior interosseuous n.
Action: Extends proximal phalanx of thumb
Nerve and Action of the Extensor pollicis brevis m.
Nerve: Posterior interosseuous n.
Action: Extends distal phalanx of thumb
Nerve and Action of the Extensor pollicis longus m.
Nerve and Action of the supinator m.
Nerve: Deep branch of radial n.
action: Supinates forearm
Nerve and Action of the Abductor pollicis longus m.
Nerve: Posterior interosseus n.
Action: Abducts thumb
Nerve: Radial n.
Action: Extend forearm
Nerve and Action of the Anconeus m.
