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Brachial Plexus (continued)

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annikavand's version from 2016-03-29 18:35

terminal nerves of the brachial plexus

Question Answer
C5, C6, & C7 contribute to what terminal branch?musculocutaneous
musculocutaneous nerve is a branch off the _________ cordlateral
musculocutaneous nerve passes through ___________ muscle into what compartment?through coracobrachialis ---> anterior compartment
3 muscles supplied by musculocutaneous nerve(1) coracobrachialis, (2) biceps brachii, (3) brachialis
coracobrachialis is innervated bymusculocutaneous nerve
biceps brachii is innervated bymusculocutaneous nerve
brachialis is innervated bymusculocutaneous nerve
musculocutaneous nerve courses between what 2 musclesbiceps & brachialis
musculocutaneous nerve becomes _______________ nerve once it passeslateral antebrachial cutaneous nerve, once it emerges lateral to tendon of biceps
lateral antebrachial nerve, a continuation of ______________, innervatesmusculocutaneous, skin of lateral forearm
(C5), C6, C7, C8, & T1 contribute to what terminal branch?median
median nerve supplies what kind of muscles?superficial muscles in anterior forearm
4 muscles supplied by median nerve(1) flexor carpi radialis, (2) palmaris longus, (3) flexor digitorum superficialis, (4) pronator teres
flexor carpi radialis is innervated bymedian nerve
palmaris longus is innervated bymedian nerve
flexor digitorum superficialis is innervated bymedian nerve
pronator teres is innervated bymedian nerve
only muscles in forearm NOT innervated by median nerve are (2 1/2)(1) brachioradialis, (2) flexor carpi ulnaris, (3) medial half of flexor digitorum profundus
in the cubital fossa, the median nerve gives rise toanterior interosseous nerve
the anterior interosseous nerve supplies what kind of muscles?deep muscles of anterior forearm
2 1/2 muscles supplied by anterior interosseous nerve(1) lateral half of flexor digitorum profundus, (2) flexor pollicis longus, (3) pronator quadratus
the lateral half of the flexor digitorum profundus is supplied byanterior interosseous nerve
flexor pollicis longus is supplied byanterior interosseous nerve
pronator quadratus is supplied byanterior interosseous nerve
at the wrist, what is the course of the median nerve?through carpal tunnel, between flexor retinaculum, & flexor tendons
branch of median nerve, at cubital fossaanterior interosseous nerve
branch of median nerve, just proximal to carpal tunnelpalmar cutaneous branch
course the palmar cutaneous branch of ______ nervemedian, branches proximal to carpal tunnel, passes superficial to flexor retinaculum
skin of the palm (up to base of lateral digits) is supplied bypalmar cutaneous branch of the median nerve supplies
4 branches of median nerve that arise distal to carpal tunnel(1) recurrent branch, (2) muscular branches, (3) common palmar digital nerves, (4) proper digital cutaneous nerves
thenar muscles are suppled byrecurrent branch of median nerve
lumbricals of index & middle fingers are supplied bymuscular branches of median nerve
common palmar digital nerves branch offmedian nerve
proper digital cutaneous nerves branch offmedian nerve
palmar aspects & sides of thumb, index, middle, and half of ring fingers are supplied bycommon palmar digital & proper digital cutaneous nerves
(C7), C8, & T1 contribute to what terminal branch?ulnar
at the elbow, the ulnar nerve passesposterior to elbow through a groove between olecranon & medial epicondyle
the ulnar nerve supplies what kind of muscles?anterior forearm
the ulnar nerve passes through the canal of ____________ located where?Guyon, between pisiform bone and hook of hamate
where is the canal of Guyon?  What passes here?between pisiform & hook of hamate, ulnar
1 1/2 muscles supplied by ulnar nerve(1) medial half of flexor digitorum profundus, (2) flexor carpi ulnaris
medial half of flexor digitorum profundus is innervated byulnar nerve
flexor carpi ulnaris is innervated byulnar nerve
2 branches of the ulnar nervesuperficial & deep
superficial branch of the ulnar nerve suppliespalmaris brevis, skin of medial palm & dorsal hand, dlrsal & palmar aspects of little finger, medial half of ring finger
palmaris brevis is innervated bysuperficial branch of ulnar nerve
deep branch of the ulnar nerve supplies3 muscles of hypothenar eminence, 2 lumbricals to ring & little finger, adductor pollicis, & 7 interosseous muscles
lumbricals of ring & little fingers are supplied bydeep branch of ulnar nerve
3 muscles of the hypothenar eminence are supplied bydeep branch of ulnar nerve
adductor pollicis is supplied bydeep branch of ulnar nerve
7 interosseous muscles are supplied bydeep branch of ulnar nerve
C5 & C6 contribute to what terminal branch?axillary nerve
course of the axillary nervethrough quadrangular space around surgical neck of humerus
2 muscles supplied by axillary nervedeltoid & teres minor (+ skin of arm covering attachment of deltoid to humerus)
deltoid is supplied byaxillary nerve
teres minor is supplied byaxillary nerve
C5, C6, C7, C8, & (T1) contribute to what terminal branch?radial nerve
3 muscles supplied by radial nerve(1) triceps brachii (all 3 heads), (2) brachioradialis, (3) extensor carpi radialis longus (+ skin of posterior arm)
triceps brachii is supplied byradial nerve
brachioradialis is supplied byradial nerve
extensor carpi radialis longus is supplied byradial nerve
where does the radial nerve divide?proximal forearm
2 branches of radial nervesuperficial cutaneous & deep muscular
superficial branch of the radial nerve supplies what skin?lateral forearm, lateral dorsal hand, dorsal aspect of lateral 3 digits to PIP joints
the deep branch of the radial nerve pierces what muscle?supinator
after innervating __________, the deep branch of the radial nerve becomes....extensor carpi radialis brevis, posterior interosseous nerve
the posterior interosseous nerve is a continuation ofdeep branch of radial nerve
deep branch of radial nerve innervatesextensor carpi radialis brevis
extensor carpi radialis brevis is supplied bydeep branch of radial nerve
the posterior interosseous nerve supplies what kind of muscles?posterior forearm
9 muscles supplied by posterior interosseous nerve(1) supinator, (2) extensor digitorum, (3) extensor carpi radialis brevis, (4) extensor carpi ulnaris, (5) extensor pollicis longus, (6) extensor pollicis brevis, (7) abductor pollicis longus, (8) extensor digiti minimi, (9) extensor indicis
supinator is supplied byposterior interosseous nerve
extensor digitorum is supplied byposterior interosseous nerve
extensor carpi radialis brevis is supplied byposterior interosseous nerve
extensor carpi ulnaris is supplied byposterior interosseous nerve
extensor pollicis longus is supplied byposterior interosseous nerve
extensor pollicis brevis is supplied byposterior interosseous nerve
abductor pollicis longus is supplied byposterior interosseous nerve
extensor digiti minimi is supplied byposterior interosseous nerve
extensor indicis is supplied byposterior interosseous nerve
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