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-ABPMR Board Review > UE Muscle Innervations > Flashcards

UE Muscle Innervations Flashcards

1
Q

median nerve origin/inn; hand

A

C8, T1 → lower trunk → medial cord → median n. → APB, FPB, lumbricals 1,2, opponens pollicus

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2
Q

[roots] → [trunk] → [nerve] → [cord] → APB, FPB, lumbricals 1,2, opponens pollicus

A

C8, T1 → lower trunk → medial cord → median n. → hand muscles (APB, FPB, lumbricals 1,2, opponens pollicus)

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3
Q

[root] → [trunk] → [nerve] → [cord] → PT, FCR

A

C6, C7 → upper and middle trunk → lateral cord → median n. → PT, FCR

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4
Q

C6, C7 → upper and middle trunk → lateral cord → median nerve → [muscles]

A

C6, C7 → upper and middle trunk → lateral cord → median n. → PT, FCR

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5
Q

[root] → [trunk] → [cord] → [nerve] → FDP 2,3

A

C7, C8, T1 → middle and lower trunk → medial cord → median nerve → AIN (pure motor) → FDP 2, 3

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6
Q

C7, C8, T1 → middle and lower trunk → medial cord → median nerve → AIN → [muscles]

A

C7, C8, T1 → middle and lower trunk → medial cord → median nerve → AIN (pure motor) → FDP 2, 3

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7
Q

C7, C8 → middle and lower trunk → medial and lateral cord → median nerve → [muscle]

A

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

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8
Q

[root] → [trunk] → [cord] → [nerve] → FDS

A

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

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9
Q

C7, C8, T1 → middle and lower trunk → medial and lateral cord → median nerve → AIN → [muscle]

A

C7, C8, T1 → middle and lower trunk → medial and lateral cord → median nerve → AIN → PQ, FPL

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10
Q

[root] → [trunk] → [cord] → [nerve] → PQ, FPL

A

C7, C8, T1 → middle and lower trunk → medial and lateral cord → median nerve → AIN → PQ, FPL

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11
Q

brachial plexus lower trunk originates from

A

C8, T1 roots

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12
Q

brachial plexus middle trunk originates from

A

C7 root

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13
Q

brachial plexus upper trunk originates from

A

C5, C6 roots

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14
Q

C7, C8, T1 → middle and lower trunk → medial cord → ulnar nerve → [muscles]

A

intrinsic hand muscles

C7, C8, T1 → middle and lower trunk → medial cord → ulnar nerve → FCU, FDP 4,5, lumbricals 3,4, interossei (3 PADs and 4 DABs), ADM, FDI

FDP 4,5 have C7 middle trunk contribution; others lower trunk C8, T1

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15
Q

radial n. innervates

A

muscles: triceps, anconeus, brachioradialis, ECRL/ECRB
sensory: posterior arm, posterior forearm, thumb, snuffbox

PIN is a branch of the radial n. that is pure motor (like AIN of median) → ECU, EIP, ED

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16
Q

superficial radial neuropathy - Px, NCS/EMG

A

pure sensory → posterior forearm and dorsal hand

usually hx tight handcuffs or IV

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17
Q

Axillary n inn’s →

A

deltoid (abduction), teres minor (external rotation), skin over deltoid

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18
Q

Axillary n. origin/inn

A

C5,6 → upper trunk → posterior cord → axillary n. → deltoid (abduction), teres minor (external rotation), skin over deltoid

19
Q

[root] → [trunk] → [cord] → [nerve] → deltoid, teres minor, skin over deltoid

A

C5,6 → upper trunk → posterior cord → axillary n. → deltoid, teres minor, skin over deltoid

20
Q

[root] → [trunk] → [cord] → [nerve] → FCU, FDP 4,5, lumbricals 3,4, interossei (3 PADs and 4 DABs), ADM, FDI (intrinsic hand muscles)

A

C7, C8, T1 → middle and lower trunk → medial cord → ulnar nerve → FCU, FDP 4,5, lumbricals 3,4, interossei (3 PADs and 4 DABs), ADM, FDI (intrinsic hand muscles)

FDP 4,5 mostly have C7 middle trunk contribution; others lower trunk C8, T1

21
Q

C8, T1 → lower trunk → medial cord → ulnar nerve → [muscles]

A

C8, T1 → lower trunk → medial cord → ulnar nerve → FCU, FDP 4,5, lumbricals 3,4, interossei (3 PADs and 4 DABs), ADM, FDI (intrinsic hand muscles)

FDP 4,5 also have C7 middle trunk contribution

22
Q

[root] → [trunk] → [cord] → [nerve] → BR

A

C5, C6 → upper trunk → posterior cord → BR

23
Q

C5, C6 → upper trunk → posterior cord → radial n. → [muscle]

A

C5, C6 → upper trunk → posterior cord → radial n. → BR

24
Q

[root] → [trunk] → [cord] → [nerve] → ECRL

A

C6, C7 → upper and middle trunk → posterior cord → radial n. → ECRL

25
Q

C6, C7 → upper and middle trunk → posterior cord → radial n. → [muscle]

A

C6, C7 → upper and middle trunk → posterior cord → radial n. → ECRL

26
Q

[root] → [trunk] → [cord] → [nerve] → triceps, anconeus

A

C6, C7, C8 → upper middle and lower trunk → posterior cord → radial n. → triceps anconeus

27
Q

C6, C7, C8 → upper middle and lower trunk → posterior cord → radial n. → [muscle]

A

C6, C7, C8 → upper middle and lower trunk → posterior cord → radial n. → triceps anconeus

28
Q

[root] → [trunk] → [cord] → [nerve] → ECU, EIP, ED

A

C7, C8 → middle and lower trunk → posterior cord → radial n. → PIN → ECU, EIP, ED

29
Q

[root] → [trunk] → [cord] → [nerve] → deltoid, teres minor, skin over deltoid

A

C5, C6 → upper trunk → posterior cord → axillary n. → deltoid, teres minor, skin over deltoid

30
Q

C5, C6 → upper trunk → posterior cord → axillary n. → [?]

A

C5, C6 → upper trunk → posterior cord → axillary n. → deltoid, teres minor, skin over deltoid

31
Q

[root] → [trunk] → [cord] → [nerve] → coracobrachialis, biceps brachii, brachialis (elbow flexors)

A

C5, C6 → upper trunk → lateral cord → musculcutaneous n. → biceps brachii (chief supinator), brachialis (chief elbow flexor), coracobrachialis

32
Q

musculocutaneous n. → terminal part

A

becomes lateral lateral antebrachial cutaneous nerve (LAC, pure sensory)

able to obtain SNAP to LAC

33
Q

[root] → [trunk] → [nerve] → supraspinatus (shoulder abduction) → [structure] → infraspinatus (shoulder external rotation)

A

C5, C6 → upper trunk → suprascapular n. → supraspinatus → spinoglenoid notch → infraspinatus

34
Q

C5, C6 → upper trunk → suprascapular n. → [muscle] → [structure] → [muscle]

A

C5, C6 → upper trunk → suprascapular n. → supraspinatus → spinoglenoid notch → infraspinatus

35
Q

[root] → [nerve] → serratus anterior

A

C5, C6, C7 → long thoracic n. → serratus anterior

36
Q

C5, C6, C7 → long thoracic n. → [muscle]

A

C5, C6, C7 → long thoracic n. → serratus anterior

“SALT”

C5,6,7 will get you into heaven on a winged scapula

37
Q

[root] → [nerve] → SCM

A

C3, C4 → spinal accessory n. → SCM

38
Q

C3, C4 → spinal accessory n. → [muscle]

A

C3, C4 → spinal accessory n. → SCM

39
Q

[root] → [nerve] → rhomboids

A

C4, C4 → dorsal scapular n. (pre plexus) → rhomboids

40
Q

C4, C4 → dorsal scapular n. (pre plexus) → [muscle]

A

C4, C4 → dorsal scapular n. (pre plexus) → rhomboids

41
Q

[root] → [trunk] → [cord] → [nerve] → pec major

A

C5, C6, C7, C8, T1 → upper, middle, and lower trunks → medial and lateral cords → medial and lateral pectoral nerves → pec major

42
Q

C5, C6, C7, C8, T1 → upper, middle, and lower trunks → medial and lateral cords → medial and lateral pectoral nerves → [muscle]

A

C5, C6, C7, C8, T1 → upper, middle, and lower trunks → medial and lateral cords → medial and lateral pectoral nerves → pec major

43
Q

[root] → [trunk] → [cord] → [nerve] → latissimus dorsi

A

C6, C7, C8 → upper, middle, and lower trunks → posterior cord → thoracodorsal n. (middle subscapular n.) → latissimus dorsi

44
Q

C6, C7, C8 → upper, middle, and lower trunks → posterior cord → thoracodorsal n. (middle subscapular n.) → [muscle]

A

C6, C7, C8 → upper, middle, and lower trunks → posterior cord → thoracodorsal n. (middle subscapular n.) → latissimus dorsi

-ABPMR Board Review (19 decks)

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