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Brachial Plexus Flashcards

1
Q

Brachial plexus is created by spinal
nerves

A

C5-C8 and T1

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2
Q

number Roots

A

5

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3
Q

number of Trunks

A

3

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4
Q

number of Divisions

A

6

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5
Q

Number of Cords

A

3

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6
Q

Number of Branches

A

5

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7
Q

The three trunks travel between

A

anterior and middle scalenes

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8
Q

 Roots of C5-C8 and T1 leave the
spinal through the

A

intervertebral
foramen

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9
Q

The cords travel through the

A

deltopectoral triangle across the anterior
chest

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10
Q

The cords travel ________ to pectoralis minor

A

DEEP

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11
Q

Long Thoracic Nerve Comes off a

A

Root

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12
Q

Long Thoracic Nerve Travels anterior to

A

the anterior
scalene

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13
Q

Long Thoracic Nerve Travels between

A

clavicle and R1

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14
Q

Long Thoracic Nerve Travels inferolateral

A

across anterior
torso

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15
Q

Long Thoracic Nerve Innervates:

A

serratus anterior

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16
Q

Suprascapular Nerve Comes off a

A

Trunk

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17
Q

Suprascapular Nerve Travels between

A

posterior scalene
and upper traps

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18
Q

Suprascapular Nerve Travels to

A

scapula

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19
Q

Suprascapular Nerve Splits into:

A

 Suprascapular nerve
 Infrascapular nerve

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20
Q

Suprascapular Nerve Innervates:

A

supraspinatus

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21
Q

Infrascapular Nerve Innervates:

A

infraspinatus

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22
Q

Medial Pectoral Nerve comes off a

A

cord

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23
Q

Medial Pectoral Nerve Travels between

A

pec major and pec
minor

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24
Q

Medial Pectoral Nerve Innervates:

A

pec major and pec minor

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25
Q

Lateral Pectoral Nerve Comes off a

A

cord

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26
Q

Lateral Pectoral Nerve Travels between

A

pec major and pec
minor

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27
Q

Lateral Pectoral Nerve innervates:

A

pec major

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28
Q

Subscapular Nerve
Comes off a

A

cord

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29
Q

Subscapular Nerve splits into:

A

 Superior subscapular nerve
 Thoracodorsal nerve
 Inferior subscapular nerve

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30
Q

Superior Subscapular Nerve Innervates:

A

subscapularis

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31
Q

Thoracodorsal Nerve Innervates:

A

latissimus dorsi

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32
Q

Inferior Subscapular Nerve Innervates:

A

teres major

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33
Q

Dorsal Scapular Nerve originates from:

A

C5 root

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34
Q

Dorsal Scapular Nerve Passes posteriorly, often piercing:

A

middle scalene, to reach and travel
along medial border of scapula

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35
Q

Dorsal Scapular Nerve Innervates:

A

Innervates levator scap, rhomboid
major, and rhomboid minor

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36
Q

Nerve to Subclavius Originates from:

A

a superior trunk

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37
Q

Nerve to Subclavius Passes:

A

antero-inferior over
subclavian artery and vein

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38
Q

Nerve to Subclavius innervates

A

Subclavius

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39
Q

Accessory Nerve [XI] is NOT?

A

not
part of BP!

40
Q

Accessory Nerve [XI]

A

Cranial nerve that descends from neck
onto deep surface of the SCM and
trapezius

41
Q

Accessory Nerve [XI] Innervates

A

SCM and Traps

42
Q

Branches Start

A

deep to pec minor

43
Q

Branches Travel through:

44
Q

Axillary Nerve comes off a:

45
Q

Axillary Nerve Travels through the

46
Q

Axillary Nerve Divides into:

A

an anterior and
posterior branch

47
Q

Creates a cuff around the deltoid?

A

Axillary Nerve

48
Q

Innervates:
 Deltoid
 Teres minor

A

Axillary Nerve

49
Q

Musculocutaneous Nerve comes off a

50
Q

Musculocutaneous Nerve travels deep to

51
Q

Musculocutaneous Nerve Pierces:

A

coracobrachialis

52
Q

Musculocutaneous Nerve Travels down?

A

anterior humerus

53
Q

Musculocutaneous Nerve Motor component terminates proximal to:

A

cubital fossa

54
Q

Musculocutaneous Nerve Innervates:

A

Innervates:
 Biceps brachii
 Brachialis
 Coracobrachialis

55
Q

Radial Nerve comes off a

56
Q

Radial Nerve travels deep to

57
Q

Radial Nerve Travels through

58
Q

Radial Nerve Travels down

A

posterior humerus
between medial and lateral heads of
triceps

59
Q

After the posterior humerus the Radial Nerve then Travels Travels posterior to

A

lateral
epicondyle of humerus

60
Q

Radial Nerve travels down _________ radius

61
Q

Enters ________ of hand by MCI

62
Q

Radial Nerve Innervates:

A

Triceps, anconeus, brachioradialis,
ECR l/b, ECU, ED, E indicis, ED minimi, Abd Pl, EP l/b, supinator

63
Q

Median Nerve Comes off a

64
Q

Median Nerve travels deep to

65
Q

Median Nerve travels through the

66
Q

Median Nerve travels Travels down medial humerus
between _______ and _______.

A

between biceps and triceps

67
Q

Median Nerve travels Travels through cubital fossa as

A

as medial neurovascular structure

68
Q

Median Nerve Pierces

A

pronator teres

69
Q

Median Nerve travels down ________ forearm

70
Q

Median Nerve travels Travels through

A

carpal tunnel

71
Q

Median Nerve travels Enters _________ of hand

A

thenar eminance

72
Q

Median Nerve Innervates:

A

Innervates: pronator teres, FCR,
palmaris longus, FDS, radial ½ of FDP, pronator quadratus, muscles
of the thenar eminance

73
Q

Ulnar Nerve comes off a

74
Q

Ulnar Nerve Travels deep to_____________

75
Q

Ulnar Nerve Travels through The _______

76
Q

Ulnar Nerve Travels down ___________ humerus
between ______ and _______.

A

medial; biceps and triceps

77
Q

Ulnar Nerve Travels _______ to medial
epicondyle; between _________ and ______(funny
bone)

A

posterior; medial
epicondyle and olecranon

78
Q

Ulnar Nerve Travels down ________ ulna

79
Q

Ulnar Nerve Travels Enters hand at __________

A

hypothenar eminance

80
Q

Ulnar Nerve Innervates:

A

Innervates: FCU, Ulnar half of FDP,
and the entire hand with the
exception of the thenar eminance

81
Q

Deltopectoral Triangle Structures creating:

A

 Clavicle – superior border
 Anterior Deltoid – lateral border
 Pec Major – medial border

82
Q

Deltopectoral Triangle Structures within:

A

 Brachial plexus – cords
 Axillary artery
 Axillary vein

83
Q

Cubital Fossa Structures creating:

A

 Biceps insertion – superior lateral
border
 Biciptal aponeurosis – superior medial
border
 Pronator teres – inferior medial border
 Brachioradialis – inferior lateral
border

84
Q

Cubital Fossa Structures within:

A

 Brachial artery – lateral
 Brachial vein – intermediate
 Median nerve - medial

85
Q

Carpal Tunnel Structures creating:

A

 Four intermediate carpals (lunate, triquetral,
trapezoid, capitate) create floor of the tunnel
 Flexor retinaculum – ceiling

86
Q

Carpal Tunnel Structures within:

A

 Tendons of FDS – superficial
 Median nerve
 Tendons of FDP – deep
 Tendons of FCR and FPL

87
Q

Myotome Test action shoulder ABduction

A

C 5 nerve root

88
Q

Myotome Test action
Elbow flexion/wrist extension

A

C 6 Nerver root

89
Q

Myotome Test action Elbow extension/wrist flexion

A

C 7 Nerve root

90
Q

Myotome Test action Thumb extension/ulnar deviation

A

C 8 nerve root

91
Q

Myotome Test action Hand intrinsics

A

T 1 nerve root

92
Q

Myotome test action Neck Flexion

A

C1-C2 nerve root

93
Q

Myotome Test action neck side bending

A

C 3 nerve root

94
Q

Myotome Test action Shoulder elevation

A

C 4 nerve root

Upper extremity (6 decks)

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