5 - UE Muscles & Nerve Roots

Name the muscle(s) innervated by the dorsal scapular n and their nerve roots

rhomboid major (C4-5)

rhomboid minor (C4-5)

levator scapulae (C5)

Name the muscle(s) innervated by the subclavian n. and their nerve roots

subclavius m. (C5-6)

Name the muscle(s) innervated by the suprascapular n and their nerve roots

supraspinatus (C4-6)

infraspinatus (C5-6)

Name the muscle(s) innervated by the lateral pectoral n and their nerve roots

pec major - clavicular head (C5-6)

Name the muscle(s) innervated by the musculocutaneous n. and their nerve roots

coracobrachialis (C5-7)

biceps brachii (C5-6)

brachialis (C5-6)

Name the muscle(s) innervated by the long thoracic n. and their nerve roots

serratus anterior (C5-7)

Name the muscle(s) innervated by the upper subscapular n. and their nerve roots

subscapularis (C5-7)

Name the muscle(s) innervated by the lower subscapular n. and their nerve roots

subscapularis (C5-7)

teres major (C5-6)

Name the muscle(s) innervated by the thoracodorsal n. and their nerve roots

latissimus dorsi (C6-8)

Name the muscle(s) innervated by the axillary n. and their nerve roots

deltoid (C5-6)

teres minor (C5-6)

Name the muscle(s) innervated by the medial pectoral n. and their nerve roots

pec major - sternocostal head (C8-T1)

pec minor (C8-T1)

Which nerve root(s) primarily supply innervation to the medial brachial cutaneous n.?

T1

Which nerve root(s) primarily supply innervation to the medial antebrachial cutaneous n.?

C8-T1

Name all the muscle(s) innervated by the radial n.

triceps brachii

anconeus

brachioradialis

supinator

extensor carpi radialis longus/brevis

extensor digitorum

extensor carpi ulnaris

extensor indicis

extensor digiti minimi

extensor pollicis longus

abductor pollicis longus

extensor pollicis brevis

Name the muscles innervated by the radial nerve that are NOT innervated by the PIN. Give their nerve roots.

triceps brachii (C6-8)

anconeus (C7-T1)

brachioradialis (C5-7)

extensor carpi radialis longus (C6-7)

extensor carpi radialis brevis (C6-7)

Which muscle, innervated by the radial nerve (not the PIN), receives partial innervation from the T1 nerve root?

anconeus (C7-T1)

Which muscle, innervated by the radial nerve (not the PIN), receives partial innervation from the C5 nerve root?

brachioradialis (C5-7)

Name all the muscles that receive innervation from the PIN and their nerve roots

supinator (C7-8)

extensor digitorum (C6-8)

extensor carpi ulnaris (C7-8)

extensor indicis (C7-8)

extensor digiti minimi (C7-8)

abductor pollicis longus (C7-8)

extensor pollicis longus (C7-8)

extensor pollicis brevis (C7-8)

Name the only muscle that is innervated by the PIN that receives partial innervation from the C6 nerve root.

extensor digitorum (C6-8)

Name all the muscles innervated by the median n.

pronator teres

flexor carpi radialis

palmaris longus

flexor digitorum superficialis

flexor digitorum profundus

flexor pollicis longus

pronator quadratus

opponens pollicis

abductor pollicis brevis

flexor pollicis brevis

1/2 lumbricals

Name all the muscles innervated by the AIN and their nerve roots

1/2 flexor digitorum profundus (C8-T1)

flexor pollicis longus (C8-T1)

pronator quadratus (C8-T1)

Name all the muscles innervated by the median nerve after the carpal tunnel. List their nerve roots.

flexor pollicis brevis (C8-T1)

opponens pollicis (C8-T1)

abductor pollicis brevis (C8-T1)

1/2 lumbricals (C8-T1)

Name all the muscles innervated by the median nerve prior to the AIN branch. List their nerve roots.

pronator teres (C6-7)

flexor digitorum superficialis (C6-7)

palmaris longus (C7-8)

flexor carpi radialis (C7-T1)

Name all the muscles innervated by the ulnar n.

flexor carpi ulnaris

1/2 flexor digitorum profundus

1/2 lumbricals

opponens digiti minimi

abductor digiti minimi

flexor digiti minimi

dorsal interossei

palmar interossei

adductor pollicis

flexor digitorum brevis - deep head

Name the muscles innervated by the ulnar n. before it passes through the tunnel of Guyon. List their nerve roots.

flexor carpi ulnaris (C7-8)

1/2 flexor digitorum profundus (C8-T1)

Name the muscles innervated by the ulnar n. after it passes through the tunnel of Guyon. List their nerve roots.

*ALL C8-T1*

1/2 lumbricals

opponens digiti minimi

abductor digiti minimi

flexor digiti minimi

dorsal interossei

palmar interossei

adductor pollicis brevis

flexor pollicis brevis - deep head

All muscles innervated by the ulnar nerve receive innervation from C8-T1 except one muscle. Name this muscle and its nerve roots.

flexor carpi ulnaris (C7-T8)

All muscles innervated by the median nerve after it passes through the carpal tunnel are innervated by which nerve roots?

all C8-T1

(1/2 LOAF)

All muscles innervated by the AIN receive innervation from which nerve roots?

all C8-T1

1/2 FDP, PQ, FPL

All muscles innervated by the PIN receive innervation from C7-8 except one muscle. Name this muscle and list its nerve roots.

extensor digitorum (C6-8)

The supscapularis muscle receives dual innervation from which nerves? List the nerve roots that supply these nerves.

upper and lower subscapular nn.

both C5-7

Name the only muscle innervated by the musculocutaneous nerve that receives partial innervation from the C7 nerve root.

coracobrachialis (C5-7)