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KLowe-Advanced Anes 2 (Rachel's Class) > Peripheral Nerve Anatomy > Flashcards

Peripheral Nerve Anatomy Flashcards

1
Q

Spinal nerves split, converge, and branch to form ___ nerves

A

peripheral nerves

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2
Q

Trigeminal nerve = CN ___

A

CN V

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3
Q

Trigeminal nerve provides majority of ___ (sensory/motor) innervation of the ___

A

Trigeminal nerve provides majority of sensory innervation of the face

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4
Q

What is of anesthetic interest with the trigeminal nerve?

A

Trigeminal neuralgia–can block the trigeminal nerve to relieve pain

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5
Q

What are the (3) nerve branches of the trigeminal nerve?

A
  • Ophthalmic
  • Maxillary
  • Mandibular
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6
Q

Glossopharyngeal nerve = CN ___

A

CN IX

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7
Q

Glossopharyngeal nerve innervates the ___pharynx, ___ palate, ___ portion of the tongue, ___ surface of the epiglottis

A

Glossopharyngeal nerve innervates the oropharynx, soft palate, posterior 1/3 portion of the tongue, pharyngeal surface of the epiglottis

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8
Q

Glossopharyngeal nerve blocks ___ reflex and ___ (anterior/posterior) pharynx

A

Glossopharyngeal nerve blocks gag reflex and posterior pharynx

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9
Q

Superior laryngeal nerve innervates base of ___, ___ (anterior/posterior) surface of epiglottis, ___ fold, and ___ (what paired cartilage?)

A

Superior laryngeal nerve innervates base of tongue, posterior surface of epiglottis, aryepiglottic fold, and arytenoids

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10
Q

Superior laryngeal nerve can be blocked by ___

A

Superior laryngeal nerve can be blocked by mucosal saturation

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11
Q

Superior laryngeal nerve arises from ___ (superior/inferior) ganglion of the ___ nerve (what CN?)

A

SLN arises from inferior ganglion of the vagus nerve

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12
Q

SLN descends behind the ___ (internal/external) carotid artery and at the level of greater Cornu of ___ bone

A

SLN descends behind the internal carotid artery and at the level of greater Cornu of hyoid bone

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13
Q

SLN divides into ___ and ___ branches

A

SLN divides into internal and external branches

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14
Q

SLN–external branch supplies ___ muscle

A

SLN–external branch supplies cricothyroid muscle

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15
Q

SLN–internal branch pierces the ___ membrane and supplies ___ (sensory/motor) innervation to the ___ and ___

A

SLN–internal branch pierces the thyrohyoid membrane and supplies sensory innervation to the larynx and hypopharynx

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16
Q

Recurrent laryngeal nerve innervates ___ and ___

A

RLN innervates vocal folds and trachea

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17
Q

Cervical plexus innervates muscles, joints, and skin in the ___ (anterior/posterior) neck; ventral rami C__-__

A

Cervical plexus innervates muscles, joints, and skin in the anterior neck; ventral rami C1-C4

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18
Q

Brachial plexus = large network of nerves that extend from ___ through ___; innervate the ___ (upper/lower) extremity

A

Brachial plexus = large network of nerves that extend from neck through axilla; innervate the upper extremity

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19
Q

Brachial plexus is composed of what (5) things?

A
  • Ventral rami (roots)
  • Trunks
  • Divisions
  • Cords
  • Branches
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20
Q

Brachial plexus ventral rami (roots) = ___ (how many?)

A

5

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21
Q

Brachial plexus trunks = ___

A

3

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22
Q

Brachial plexus divisions = ___

A

6

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23
Q

Brachial plexus cords = ___

A

3

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24
Q

Brachial plexus branches = ___

A

4

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25
Q

BP roots, trunks, and divisions are found in the ___ of the neck, ___clavicular

A

BP roots, trunks, and divisions are found in the posterior triangle of the neck, supraclavicular

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26
Q

BP cords and branches are found in the ___, ___clavicular

A

BP cords and branches are found in the axilla, infraclavicular

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27
Q

What are the roots of the brachial plexus?

A

C5-T1

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28
Q

Be able to draw brachial plexus

A

.

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29
Q

What are the (3) trunks of the brachial plexus?

A
  • Superior (C5-6)
  • Middle (C7)
  • Inferior (C8-T1)
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30
Q

Superior trunk = __ (what roots?)

A

C5-C6

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31
Q

Middle trunk = __

A

C7

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32
Q

Inferior trunk = __

A

C8-T1

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33
Q

Brachial plexus trunks are enveloped in fascial sheath–T/F?

A

True

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34
Q

Interscalene space emerges between ___ and ___ scalene muscles

A

anterior and middle scalene muscles

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35
Q

Interscalene space is used for block of ___

A

upper extremity

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36
Q

Why might you see an incomplete block with interscalene blocks?

A

Because person may have individual septa

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37
Q

Divisions of the brachial plexus = 3 ___/___ divisions + 3 ___/___ divisions

A

3 ventral/anterior divisions + 3 dorsal/posterior divisions

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38
Q

Ventral/anterior divisions supply ___ (flexor/extensor) portions

A

flexor

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39
Q

Dorsal/posterior divisions supply ___ (flexor/extensor) portions

A

extensor

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40
Q

In axilla, 3 dorsal divisions combine to form ___ cord

A

posterior cord

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41
Q

In axilla, 3 ventral divisions combine to form ___ and ___ cords

A

lateral and medial cords

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42
Q

Cords of brachial plexus are now named according to position relative to ___ artery

A

axillary artery

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43
Q

At lateral border of pectoralis minor, each cord of brachial plexus divides into 2 branches and become ___ nerves

A

peripheral nerves

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44
Q

Lateral cord branches into ___ nerve; ___ (lateral/medial) root of median nerve

A
  • musculocutaneous nerve

- lateral root of median nerve

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45
Q

Medial cord branches into ___ nerve; ___ (lateral/medial) root of median nerve

A
  • ulnar nerve

- medial root of median nerve

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46
Q

Posterior cord branches into ___ nerve and ___ nerve

A
  • axillary nerve

- radial nerve

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47
Q

Axillary nerve is formed from __-__ (what roots?)

A

C5-6

48
Q

Axillary nerve passes from __ to __

A

axilla to shoulder

49
Q

Axillary nerve is __ (anterior/posterior) to the neck of humerus

A

posterior

50
Q

Axillary nerve innervates ___

A

shoulder

51
Q

Radial nerve is formed from __-__ (what roots?)

A

C5-T1

52
Q

Radial nerve passes from __ to __

A

axilla to arm

53
Q

Superficial branch of radial nerve innervates ___ of the hand onto the __, __, __, and __ fingers

A

dorsum of the hand onto the thumb, index, middle, and ring fingers

54
Q

Deep branch of radial nerve innervates many of the muscles of the __ and __

A

wrist and hand

55
Q

Where does the radial nerve divide into superficial/deep branches?

A

At the elbow

56
Q

Radial nerve motor responses to stimulation–wrist ___ (flexion/extension), metacarpo-phalangeal ___ (flexion/extension), thumb ___ (ab/adduction)

A

wrist extension, metacarpi-phalangeal extension, thumb abduction

57
Q

Musculocutaneous nerve roots = __

A

C5-C7

58
Q

Motor response to musculocutaneous nerve stimulation = ___

A

biceps flexion

59
Q

Median nerve roots = __

A

C5-T1

60
Q

Median nerve descends the arm with ___ artery

A

brachial artery

61
Q

Median nerve passes into forearm through ___

A

carpal tunnel

62
Q

Median nerve innervates forearm ___ (pronators/supinators)

A

forearm pronators

63
Q

Median nerve innervates wrist ___ (flexors/extensors)

A

wrist flexors

64
Q

Median nerve innervates finger ___ (flexors/extensors)

A

finger flexors

65
Q

Median nerve innervation thumb–__duction and __

A

abduction and opposition

66
Q

Median nerve motor response to stimulation–wrist ___ (flexion/extension), finger ___ (flexion/extension), thumb ___

A

wrist flexion, finger flexion, thumb opposition

67
Q

Ulnar nerve roots = __

A

C8-T1

68
Q

Ulnar nerve innervates __ and __ surface of hand

A

dorsal and medial surface of hand

69
Q

Ulnar nerve innervates dorsal surface of __ and __ fingers

A

dorsal surface of ring and little fingers

70
Q

Motor response to ulnar nerve stimulation = ulnar __ of the wrist; metacarpo-phalangeal __ (extension/flexion); thumb __duction

A

ulnar deviation of the wrist; metacarpo-phalangeal flexion; thumb adduction

71
Q

Lumbosacral plexus is formed by ventral rami __-__; may include __

A

L1-S5; may include T12

72
Q

Lumbosacral plexus innervates __ and __

A

lower abdomen and lower extremities

73
Q

Iliohypogastric nerve is formed by __-__

A

T12-L1

74
Q

Iliohypogastric nerve innervates __; skin over __ and __

A

parietal peritoneum; skin over inferior abdomen and buttocks

75
Q

Ilioinguinal nerve is formed by __-__

A

T12-L1

76
Q

Ilioinguinal nerve terminates on the anterior __ or __

A

anterior scrotum or labia majora

77
Q

Ilioinguinal nerve innervates __; __; portions of external __

A

parietal peritoneum; superior/medial thigh; portions of external genitalia

78
Q

Genitofemoral nerve is formed by __-__

A

L1-L2

79
Q

Genitofemoral nerve terminates on anterior __ or __

A

anterior scrotum or labia majora

80
Q

Genitofemoral nerve innervates skin covering __; skin on __ or __

A

skin covering femoral hiatus; skin on scrotum or labia majora

81
Q

Pudendal nerve comes from anterior division of __-__

A

S2-S4

82
Q

Pudendal nerve innervates muscle and skin of __

A

perineum

83
Q

Lateral femoral cutaneous nerve roots = posterior division __-__

A

posterior division L2-3

84
Q

Lateral femoral cutaneous nerve innervates __ to level of __

A

lateral aspect of thigh to level of knee

85
Q

Posterior femoral cutaneous nerve roots = anterior and posterior division of __-__

A

anterior and posterior division of S1-S3

86
Q

Posterior femoral cutaneous nerve innervates __, __ to __

A

posterior thigh, hip to mid calf

87
Q

Obturator nerve = anterior divison __-__

A

anterior division L2-4

88
Q

Obturator nerve controls __duction, __ and __ of hip

A

adduction, flexion and extension of hip

89
Q

Obturator nerve innervates __

A

medial thigh

90
Q

Femoral nerve = posterior divison __-__

A

posterior division L2-L4

91
Q

Where does the femoral nerve split? What does it split into?

A

Below inguinal ligament, splits into anterior and posterior branches

92
Q

What does the posterior branch of femoral nerve contain?

A

Saphenous nerve

93
Q

Femoral nerve position from medial-lateral

A

VAN

vein, artery, nerve

94
Q

Femoral nerve position from lateral-medial

A

NAVEL

nerve, artery, vein, empty space, ligament

95
Q

Femoral nerve innervates what (5) muscles?

A
  • Rectus femoris
  • Vastus lateralis
  • Vastus intermedius
  • Vastus medialis
  • Sartorious
96
Q

Femoral nerve innervates anterior or posterior thigh?

A

Anterior thigh

97
Q

Saphenous nerve branches from what nerve?

A

Femoral nerve–posterior branch

98
Q

Saphenous nerve innervates __ leg from __ to __

A

medial leg from knee to arch of foot

99
Q

Stimulation of saphenous nerve = __ muscle contraction (__like across thigh); patellar __

A

sartorious muscle contraction (bandlike across thigh); patellar twitch (snap)

100
Q

Sciatic nerve is formed by junction of what (2) nerves?

A
  • Tibial nerve

- Common peroneal nerve

101
Q

Tibial nerve roots = __-__

A

anterior L4-S3

102
Q

Common peroneal nerve roots = __-__

A

posterior L4-S2

103
Q

Sciatic nerve = hip __ (extension/flexion); __ (extension/flexion) of knee

A

hip extension; flexion of knee

104
Q

The tibial and common peroneal nerves join to form __ nerve

A

sciatic nerve

105
Q

Tibial and common peroneal nerves begin from the same sheath–T/F?

A

True

106
Q

(2) branches of tibial nerve

A
  • Medial plantar nerve

- Lateral plantar nerve

107
Q

Two branches of the tibial nerve innervate __ (dorsal/plantar) surface of foot

A

plantar surface of foot

108
Q

(2) branches of common peroneal nerve

A
  • Superficial

- Deep

109
Q

Superficial branch of common peroneal nerve innervates __ and __ surface of foot

A

lateral/dorsal surface of foot

110
Q

Deep branch of common peroneal nerve innervates skin between __ and __

A

skin between hallux and second toe

111
Q

Sural nerve is formed from union of branch from __ and __ nerves

A

tibial and common peroneal nerves

112
Q

Sural nerve travels with __ nerve

A

saphenous

113
Q

Sural nerve innervates posterior __ of foot, posterior __, __ tendon above ankle

A

posterior sole of foot, posterior heel, achilles tendon above ankle

114
Q

Motor response to tibial nerve stimulation = __(plantar/dorsi)flexion of foot and toes, __(e/in)version of foot

A

plantarflexion of foot and toes, inversion of foot

115
Q

Motor response to superficial peroneal nerve stimulation = __duction of foot, __(e/in)version of foot

A

abduction of foot, eversion of foot

116
Q

Motor response to deep peroneal nerve stimulation = __(plantar/dorsi)flexion of foot

A

dorsiflexion of foot

KLowe-Advanced Anes 2 (Rachel's Class) (16 decks)

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