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Lynne Study Flashcards > Peripheral nerve Anatomy > Flashcards

Peripheral nerve Anatomy Flashcards

1
Q

Dorsal scapular nerve target

A

Rhomboids

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2
Q

Dorsal scapular nerve roots

A

C4 c5

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3
Q

Long thoracic target

A

Serratus anterior

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4
Q

Long thoracic roots

A

C5 c6 C7

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5
Q

Long thoracic action

A

Stabilize shoulder when pushing

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6
Q

Medial pectoral roots

A

C8 T1

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7
Q

Lateral pectoral target

A

Pectoralis major

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8
Q

Lateral pectoral roots

A

C5 C6

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9
Q

Thoracodorsal target

A

Latissimus Dorsi

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10
Q

Thoracodorsal nerve roots

A

C6 C7 C8

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11
Q

Subscapular nerve target

A

Teres major

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12
Q

Suprascapular nerve target

A

Supraspinatus and infraspinatus

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13
Q

Subscapular nerve roots

A

C5, C6,C7

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14
Q

Musculocutaneous nerve targets (4)

A

Brachialis
Coracobrachialis
Biceps brachii
Lateral antebrachial cutaneous

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15
Q

Axillary nerve targets (3)

A

Deltoid
Teres minor
Small patch on lateral arm (sargent’s patch)

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16
Q

Radial nerve targets (13)

A 
Triceps
Brachioradialis
Extensor carpi radialis longus 
Extensor carpi radialis brevis
Supinator 
Extensor carpi ulnaris 
Extensor digitorum
Extensor digiti minimi
Abductor pollicis longus
Extensor pollicis longus
Extensor pollicis brevis
Extensor indicis 
Superficial radial nerve
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17
Q

“Fat in a frying pan”

A

Normal spontaneous activity representing end plate spikes

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18
Q

Timing to abnormal spontaneous activity

A

2-6 weeks after injury

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19
Q

Abnormal spontaneous activity - represents what?

A

Acute lack of innervation

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20
Q

How long does abnormal spontaneous activity last?

A

Until re-innervation unless ongoing nerve injury

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21
Q

What causes a fibrillation potential?

A

AP of a single muscle fiber that loses innervation acutely or ongoing

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22
Q

“Ticking of a clock” represents what EMG finding?

A

Fibrillation potential (acute denervation)

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23
Q

Neuropathic causes of Fibrillation Potentials

A

Radiculopathies, plexopathies, peripheral neuropathies

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24
Q

Myopathic causes of fibrillation potentials:

A

Inflammation, dystrophies

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25
Q

Positive Sharp Waves on EMG

A

Acute denervation

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26
Q

“Raindrops on a tin roof.”

A

Fasciculations

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27
Q

What do fasciculations represent?

A

Random discharging of AP’s for an entire motor unit

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28
Q

Causes of fasciculations

A

ALS, benign fasciculation syndrome, axonal peripheral neuropathies

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29
Q

“Jackhammer” sound

A

Complex Repetitive Discharges (MUAP groups), non-specific

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30
Q

“Dive Bomber” sound

A

Myotonia

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31
Q

“Marching Soldiers”

A

Myokymia

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32
Q

Causes of myokymia

A

Radiation, Compression, MS

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33
Q

Increased MUAP Amplitude

A

Neurogenic - caused by simulatneous firing of fast/slow fibers

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34
Q

Decrease MUAP Amplitude

A

Myogenic - caused by decreased muscle response to stimulus *

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35
Q

Polyphasic MUAP’s

A

Neurogenic

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36
Q

What does increased recruitment ratio mean?

A

Decreased recruitment (higher frequency firing before recruiting new motor units)

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37
Q

What might cause decreased recruitment?

A

Conduction block or axonal problem

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38
Q

What does EMG look like in poor activation

A

pattern and frequency normal, few motor units

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39
Q

What does rapid recruitment signify on EMG

A

Myogenic process

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40
Q

Deltoid - nerve root

A

C5

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41
Q

Deltoid named nerve

A

Axillary

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42
Q

Triceps - nerve root

A

C7

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43
Q

Triceps named nerve

A

Radial

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44
Q

Biceps - nerve root

A

C6

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45
Q

Biceps - named nerve

A

Musculocutaneous

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46
Q

First dorsal interosseous - nerve root

A

C8

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47
Q

First dorsal interosseous - named nerve

A

Ulnar

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48
Q

Abductor pollicis brevis - nerve root

A

T1

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49
Q

Abductor pollicis brevis - named nerve

A

Median

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50
Q

Iliopsoas - nerve root

A

L2/3

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51
Q

Iliopsoas named nerve

A

Partial femoral

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52
Q

Vastus medialis

A

L4

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53
Q

Vastus medialis - named nerve

A

Femoral

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54
Q

Tibials anterior - nerve root

A

L5

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55
Q

Tibilais anterior - named nerve

A

deep peroneal

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56
Q

Extensor hallucis longus - nerve root

A

L5

57
Q

Extensor hallucis longus - named nerve

A

Deep peroneal

58
Q

Gastrocnemius - nerve root

A

S1

59
Q

Gastrocnemius - named nerve

A

Tibial

60
Q

Semitendinosis - nerve root

A

S1

61
Q

Semitendinosis- named nerve

A

Sciatic nerve

62
Q

Brachioradialis - nerve root

A

C6

63
Q

Brachioradialis - named nerve

A

Radial

64
Q

Extensor carpi ulnaris - nerve root

A

C7

65
Q

Extensor carpi ulnaris - named nerve

A

Posterior interosseus

66
Q

Extensor digitorum - nerve root

A

C7

67
Q

Extensor digitorum - named nerve

A

Posterior interosseus

68
Q

Abductor pollicis longus - nerve root

A

C7 C8

69
Q

Abductor pollicis longus - named nerve

A

Posterior interosseus

70
Q

Extensor pollicis longus - nerve root

A

C7

71
Q

Extensor pollicis longus - named nerve

A

Posterior interosseus

72
Q

Extensor pollicis brevis - root

A

C7 (C8)

73
Q

Extensor pollicis brevis - named nerve

A

Posterior interosseus

74
Q

Median nerve targets (12)

A 
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor digitorium superficialis
Pronator quadratus
Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis
Lumbricals 1-2
Flexor digitorium profundus 1-2
Flexor pollicis longus
Sensory to anterior hand 1-3
75
Q

Anterior interosseus targets

A

Flexor digitorum profundus (1-2)

Flexor pollicis longus

76
Q

Abductor pollicis brevis - nerve root

A

T1

77
Q

Abductor pollicis brevis - named nerve

A

Median

78
Q

Flexor pollicis longus - nerve root

A

C8

79
Q

Flexor pollicis longus - named nerve

A

Anterior interosseus

80
Q

Axillary nerve roots

A

C5

81
Q

Musculocutaneous roots

A

C5, C6

82
Q

Radial nerve roots

A

C5-C8

83
Q

Posterior interosseous targets

A 
supinator
extensor carpi ulnaris
Extensor digitorum
Abductor pollicis longus
Extensor pollicis longus
Extensor pollicis brevis
Extensor indicis
84
Q

Posterior interosseus roots

A

C7 (some C6 and C8)

85
Q

Median nerve roots

A

C6-T1

86
Q

Ulnar nerve roots

A

C8, T1

87
Q

Anterior interosseus roots

A

C7-C8

88
Q

Ulnar nerve targets

A 
Flexor digitorum profundus (3-4)
Flexor carpi ulnaris
Flexor pollicis brevis
Hypothenar muscles
Adductor pollicis
Palmar interossei
Dorsal interossei
Lumbricals 3-4
89
Q

Femoral nerve roots

A

L1-L4

90
Q

Obdurator nerve roots

A

L2-L4

91
Q

Superior gluteal nerve roots

A

L4-S1

92
Q

Inferior gluteal nerve roots

A

L5-S2

93
Q

Sciatic nerve roots

A

L4-S2

94
Q

Common peroneal

A

L5-S1 (Small L4, tib ant)

95
Q

Shoulder abduction root

A

C5

96
Q

Elbow flexion root

A

C5,6

97
Q

Elbow extension root

A

C7

98
Q

Radial wrist flexion root

A

C6

99
Q

Finger extension root

A

C7

100
Q

Finger flexion - root

A

C8

101
Q

Finger abduction - root

A

T1

102
Q

Hip flexion root

A

L1/L2

103
Q

Hip adduction root

A

L2/L3

104
Q

Hip extension root

A

L5,S1

105
Q

Knee flexion root

A

S1

106
Q

Knee extension root

A

L3/4

107
Q

Ankle dorsiflexion root

A

L4

108
Q

Ankle plantar flexion root

A

S1

109
Q

Ankle eversion

A

L5/S1

110
Q

Shoulder abduction - named nerve

A

Axillary

111
Q

Elbow flexion - named nerve

A

Musculocutaneous

112
Q

Elbow extension - named nerve

A

Radial

113
Q

Finger extension - named nerve

A

Posterior interosseus

114
Q

Finger flexion - named nerve

A

Anterior interosseus (median and ulnar help)

115
Q

Finger abduction - named nerve

A

Ulnar nerve (some median)

116
Q

Hip adduction - named nerve

A

Obdurator

117
Q

Hip extension - named nerve

A

Sciatic

118
Q

Knee flexion - named nerve

A

Sciatic

119
Q

Knee extension - named nerve

A

Femoral

120
Q

Ankle dorsiflexion - named nerve

A

Deep peroneal

121
Q

Ankle plantar flexion - named nerve

A

Tibial

122
Q

Ankle eversion - named nerve

A

Superficial peroneal

123
Q

Big toe extension - named nerve

A

Deep peroneal

124
Q

Roots responsible for lateral arm and thumb sensation

A

C5/C6

125
Q

Roots responsible for medial arm and pinky sensation

A

C8,T1

126
Q

Medial forearm innervation - named nerve

A

Musculocutaneous nerve

127
Q

Anterior and lateral hand innervation - named nerve

A

Median

128
Q

Medial hand sensory innervation - named nerve

A

Ulnar

129
Q

Medial forearm sensory innervation - named nerve

A

Medial antebrachial cutaneous

130
Q

Anterior lateral thigh sensory innervation - named nerve

A

Lateral femoral cutaneous

131
Q

Anterior medial thigh, knee and medial shin innervation - named nerve

A

Femoral nerve

132
Q

Inner thigh innervation - named nerve

A

Obdurator

133
Q

Posterior thigh innervation - named nerve

A

posterior cutaneous nerve

134
Q

Lateral shin and foot innervation (including webspace)- named nerve

A

Common peroneal

135
Q

Lateral shin and foot innervation(spares webspace) - named nerve

A

Superficial peroneal

136
Q

1-2 Toe webspace sensory - named nerve

A

Deep Peroneal

137
Q

Lateral foot sensory - named nerve

A

sural nerve

138
Q

Bottom of foot sensory innervation (including tips of toes)- named nerve

A

Tibial

Lynne Study Flashcards (9 decks)

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