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Muscle Innervations > Upper Extremity Innervations > Flashcards

Upper Extremity Innervations Flashcards

1
Q

trapezius, sternocleidomastoid (SCM)

A

C3, C4; spinal accessory nerve

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2
Q

rhomboids

A

C4, C5; dorsal scapular nerve (pre-plexus)

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3
Q

supraspinatus, infraspinatus

A

C5, C6; upper trunk; suprascapular nerve; nerve passes through spinoglenoid notch (innervates a muscle before and after)

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4
Q

biceps brachii, brachialis

A

C5, C6; upper trunk; lateral cord; musculocutaneous nerve

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5
Q

deltoid, teres minor

A

C5, C6; upper trunk; posterior cord; axillary nerve

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6
Q

brachioradialis (BR)

A

C5, C6; upper trunk; posterior cord; radial nerve

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7
Q

serratus anterior

A

C5, C6, C7; long thoracic nerve

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8
Q

pectoralis major

A

C5, C6, C7, C8, T1; upper, middle, lower trunk; medial and lateral cord; medial and lateral pectoral nerves

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9
Q

pronator teres (PT), flexor carpi radialis (FCR)

A

C6, C7; upper and middle trunk; lateral cord; median nerve

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10
Q

extensor carpi radialis longus (ECRL)

A

C6, C7; upper and middle trunk; posterior cord; radial nerve

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11
Q

triceps, anconeus

A

C6, C7, C8; upper, middle, lower trunk; posterior cord; radial nerve

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12
Q

latissimus dorsi

A

C6, C7, C8; upper, middle, lower trunk; posterior cord; thoracodorsal nerve

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13
Q

extensor carpi ulnaris (ECU), extensor indicis proprius (EIP), extensor digitorum (ED)

A

C7, C8; middle and lower trunk; posterior cord; radial nerve; posterior interosseous nerve (PIN)

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14
Q

flexor digitorum superficialis (FDS)

A

C7, C8; middle and lower trunk; medial and lateral cord; median nerve

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15
Q

pronator quadratus (PQ), flexor pollicis longus (FPL)

A

C7, C8, T1; middle and lower trunk; medial and lateral cord; median nerve; anterior interosseous nerve (AIN)

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16
Q

flexor digitorum profundus (FDP) 2,3

A

C7, C8, T1; middle and lower trunk; medial cord; median nerve; anterior interosseous nerve (AIN)

17
Q

flexor digitorum profundus (FDP) 4,5

A

C7, C8, T1; middle and lower trunk; medial cord; ulnar nerve

18
Q

abductor pollicis brevis (APB), flexor pollicis brevis (FPB), lumbricals 1,2, opponens pollicis

A

C8, T1; lower trunk; medial cord; median nerve

19
Q

flexor carpi ulnaris (FCU), abductor digiti minimi (ADM), first dorsal interosseous (FDI), lumbricals 3,4, interossei (3 palmar interossei which adduct (PADs) and 4 dorsal interossei which abduct (DABs))

A

C8, T1; lower trunk; medial cord; ulnar nerve

20
Q

skin over lateral forearm

A

C5, C6; upper trunk; lateral cord; musculocutaneous nerve; terminates as lateral antebrachial cutaneous nerve (LAC)

21
Q

skin over medial forearm

A

C8, T1; lower trunk; medial cord; medial antebrachial cutaneous nerve (MAC)

Muscle Innervations (6 decks)

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