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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

57
Q

Extensor hallucis longus - named nerve

A

Deep peroneal

58
Q

Gastrocnemius - nerve root

59
Q

Gastrocnemius - named nerve

60
Q

Semitendinosis - nerve root

61
Q

Semitendinosis- named nerve

A

Sciatic nerve

62
Q

Brachioradialis - nerve root

63
Q

Brachioradialis - named nerve

64
Q

Extensor carpi ulnaris - nerve root

65
Q

Extensor carpi ulnaris - named nerve

A

Posterior interosseus

66
Q

Extensor digitorum - nerve root

67
Q

Extensor digitorum - named nerve

A

Posterior interosseus

68
Q

Abductor pollicis longus - nerve root

69
Q

Abductor pollicis longus - named nerve

A

Posterior interosseus

70
Q

Extensor pollicis longus - nerve root

71
Q

Extensor pollicis longus - named nerve

A

Posterior interosseus

72
Q

Extensor pollicis brevis - root

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

77
Q

Abductor pollicis brevis - named nerve

78
Q

Flexor pollicis longus - nerve root

79
Q

Flexor pollicis longus - named nerve

A

Anterior interosseus

80
Q

Axillary nerve roots

81
Q

Musculocutaneous roots

82
Q

Radial nerve roots

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

86
Q

Ulnar nerve roots

87
Q

Anterior interosseus roots

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

90
Q

Obdurator nerve roots

91
Q

Superior gluteal nerve roots

92
Q

Inferior gluteal nerve roots

93
Q

Sciatic nerve roots

94
Q

Common peroneal

A

L5-S1 (Small L4, tib ant)

95
Q

Shoulder abduction root

96
Q

Elbow flexion root

97
Q

Elbow extension root

98
Q

Radial wrist flexion root

99
Q

Finger extension root

100
Q

Finger flexion - root

101
Q

Finger abduction - root

102
Q

Hip flexion root

103
Q

Hip adduction root

104
Q

Hip extension root

105
Q

Knee flexion root

106
Q

Knee extension root

107
Q

Ankle dorsiflexion root

108
Q

Ankle plantar flexion root

109
Q

Ankle eversion

110
Q

Shoulder abduction - named nerve

111
Q

Elbow flexion - named nerve

A

Musculocutaneous

112
Q

Elbow extension - named nerve

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

117
Q

Hip extension - named nerve

118
Q

Knee flexion - named nerve

119
Q

Knee extension - named nerve

120
Q

Ankle dorsiflexion - named nerve

A

Deep peroneal

121
Q

Ankle plantar flexion - named nerve

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

125
Q

Roots responsible for medial arm and pinky sensation

126
Q

Medial forearm innervation - named nerve

A

Musculocutaneous nerve

127
Q

Anterior and lateral hand innervation - named nerve

128
Q

Medial hand sensory innervation - named nerve

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

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

Lynne Study Flashcards (9 decks)

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