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Neuro > Spinal Roots > Flashcards

Spinal Roots Flashcards

1
Q

posterior aspect of shoulder

A

C4

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2
Q

lateral aspect of the upper arm

A

C5

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3
Q

medial aspect of the lower arm

A

T1

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4
Q

tip of the thumb

A

C6

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5
Q

tip of the middle finger

A

C7

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6
Q

tip of pinky finger

A

C8

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7
Q

thorax, nipple level

A

T5

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8
Q

thorax, umbilical level

A

T10

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9
Q

upper part of the upper leg

A

L2

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10
Q

lower medial part of the upper leg

A

L3

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11
Q

medial lower leg

A

L4

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12
Q

lateral lower leg

A

L5

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13
Q

sole of foot

A

S1

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14
Q

buttock, thigh and posterior leg

A

S2

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15
Q

Reflex grade 0

A

no response

  • always abnormal
  • lesion in the reflex arc
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16
Q

Reflex grade 1+

A

diminished/depressed response

-may or may not be normal

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17
Q

Reflex grade 2+

A

active normal response

-normal

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18
Q

Reflex grade 3+

A

brisk/exaggerated response

-may or may not be normal

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19
Q

Reflex grade 4+

A

very brisk/hyperactive (JMF sustained)

-always abnormal

20
Q

Spinal level of biceps tendon DTR

A

C5-C6

21
Q

Spinal level of brachioradial tendon DTR

A

C5-C6

22
Q

Spinal level of triceps tendon DTR

A

C6-C7

23
Q

Spinal level of patellar tendon DTR

A

L3-L4

24
Q

Spinal level of achilles tendon DTR

A

S1-S2

25
Q

What if there are absent reflexes and sensory loss in the distribution of the nerve?

A
  • The lesion is found within the afferent arc of the reflex

- Lesion is either in the nerve or dorsal horn

26
Q

What if absent reflexes accompany paralysis, fasiculations, or atrophy?

A
  • The lesion is found withing the efferent arc of the reflex

- Lesion may include the efferent nerve, anterior horn cells, or both

27
Q

What nerve roots are involved in throacic outlet syndrome?

A

commonly C8 and T1
-see issues in the ulnar nerve distribution
second most common: C5, C6, C7
-see issues in radial nerve n. distribution

28
Q

What muscles can be very tight in TOS?

A

scalenes- can pull first rib into clavicle

pectoralis minor

29
Q

Which root fibers primarily innervate axillary n.?

A

C5

30
Q

Which root fibers primarily innervate musculocutaneous n.?

A

C5-C6

31
Q

Which root fibers primarily innervate median n.?

A

C6

32
Q

Which root fibers primarily innervate radial n.?

A

C7-C8

33
Q

Which root fibers primarily innervate ulnar n.?

A

C8-T1

34
Q

What muscles are innervated by dorsal scapular n.?

A

Rhomboids

Levator Scapula

35
Q

What muscles are innervated by long thoracic n.?

A

Serratus anterior

36
Q

What muscles are innervated by nerve to subclavius?

A

subclavius

37
Q

What muscles are innervated by suprascapular n.?

A

supraspinatus

infraspinatus

38
Q

What muscles are innervated by lateral pectoral n.?

A

clavicular head of pec major

39
Q

What muscles are innervated by musculocutaneous n.?

A

biceps brachii
brachialis
coracobrachialis

40
Q

What muscles are innervated by medial pectoral n.?

A

pec minor

sternal head of pec minor

41
Q

What muscles are innervated by ulnar n.?

A 
FCU
FDP
3rd and 4th lumbricles
Hypothenar eminence
Most small muscles of the hand
42
Q

What muscles are innervated by medial and lateral root of the median n.?

A

Flexor muscles of the forearm, except FCU and five muscles in the hand

43
Q

What muscles are innervated by upper subscapular n.?

A

subscapularis

44
Q

What muscles are innervated by thoracodorsal n.?

A

latissimus dorsi

45
Q

What muscles are innervated by lower subscapular n.?

A

subscapularis

Teres major

46
Q

What muscles are innervated by axillary n.?

A

Deltoids

Teres Minor

47
Q

What muscles are innervated by radial n.?

A 
Triceps
Anconeus
brachioradials
Extensors of forearm
Supinator

Neuro (11 decks)

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