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PNS > Exam 3 Quiz 4- Brachial Plexus > Flashcards

Exam 3 Quiz 4- Brachial Plexus Flashcards

1
Q

Each root recieves gray ramus communicans from the

A

Sympathetic trunk

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2
Q

Where two structures do the roots pass by

A

Between anterior and middle scalene muscles into posterior triangle

Posterior and superior to the subclavian artery

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3
Q

What root combines to form the superior trunk

A

C5/C6

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4
Q

What root makes up the middle trunk

A

C7

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5
Q

What roots make up the inferior trunk

A

C8 and T1

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6
Q

The lateral cord is formed by

A

The superior and middle trunks

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7
Q

What fibers are in the lateral cord

A

C5,6,7

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8
Q

Where is the lateral cord located?

A

LATERAL to the second part of the axillary artery

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9
Q

Medial cord is formed by the

A

Anterior division of the inferior trunk

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10
Q

Medial cord contains fibers from

A

C8, T1

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11
Q

The medial cord is located where

A

Medial to the second part of the axillary artery

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12
Q

The posterior cord is made up of

A

The posterior division of all three trunks

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13
Q

Posterior trunk contains fibers from

A

C5,6,7,8 and T1

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14
Q

The posterior cord lies

A

Posterior to the second part of the axillary artery

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15
Q

The dorsal scapular nerve is branches off the

A

C5 root, contains C5 FIBERS ONLY

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16
Q

What three muscles does the dorsal scapular nerve suppply

A

Rhomboid major/minor

Levator scapula (C3,C4 fibers)

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17
Q

Long thoracic nerve is formed from roots

A

C5,6,7

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18
Q

What does long thoracic nerve supply

A

Serratus anterior, fibers C5,6,7

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19
Q

What are the two nerves which branch off the superior trunk

A

Suprascapular nerve, nerve to subclavius

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20
Q

Suprascapular nerve contains fibers from

A

C5,C6

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21
Q

What two muscles does suprascapular nerve supply

A

Supraspinatus

Infraspinatus

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22
Q

Nerve to subclavius contains fibers from ______ and supplies ______

A

C5,6 subclavius

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23
Q

What other two nerves branch off the lateral cord

A

Lateral pectoral nerve

Musculocutaneous

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24
Q

Lateral pectoral nerve contains fibers from

A

C5,6,7 and supplies Pec major

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25
Q

Musculocutaneous nerve contains fibers from

A

C5,6,7

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26
Q

What nerve supplies 3/4 muscles of the anterior arm

A

Musculocutaneous nerve

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27
Q

What three muscles does musculocutaneous supply

A

Coracobrachialis

Biceps brachii

Brachialis

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28
Q

What nerve pierces coracobrachialis

A

Musculocutaneous

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29
Q

What nerve continues into the forearm as the lateral cutaneous nerve of the forearm

A

Musculocutaneous

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30
Q

The ______________ is a branch of the musculocutaneous that goes into the forearm

A

Lateral cutaneous nerve of the forearm, supplies skin over the lateral aspect of the forearm

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31
Q

What are the two terminal branches of the lateral cord?

A

Median nerve

Musculocutaneous nerve

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32
Q

The medial pectoral nerve contains fibers from

A

C8, T1

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33
Q

What two muscles does the medial pectoral nerve supply

A

Pec major/minor

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34
Q

Medial cutaneous nerve of the arm contains fibers from

A

C8, T1, can receive fibers from T2

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35
Q

Medial cutaneous nerve of the arm can receive fibers fromT2 via

A

Intercostobrachial nerve

36
Q

The medial cutaneous nerve of the arm supplies skin over

A

The medial arm between the axilla and elbow

37
Q

Medial cutaneous nerve of the forearm contains fibers from

38
Q

MEdial cutaneous nerve of the forearm supplies skin

A

Over biceps brachii, anterior and medial aspects of forearm distal to the wrist

39
Q

Ulnar nerve contains fibers from

A

C8 and T1 sometimes C7

40
Q

The ulnar nerve travels

A

Medial to the brachial artery, in the medial bicipital sulcus

41
Q

True or False

The ulnar nerve gives branches off in the arm

42
Q

Where does the ulnar nerve pass

A

Crosses posterior side of the medial epicondyle aka Funny BONE

43
Q

The ulnar nerve travels in the forearm between

A

The two heads of flexor Capri ulnaris

44
Q

What two muscles does the ulnar nerve innervate

A

Flexor Capri ulnaris

Flexor digitorum profundus

45
Q

The ulnar nerve gives off two sensory branches in the forearm the

A

Dorsal branch- ulnar side, posterior hand

Palmar branch- skin over the hypothenar eminence

46
Q

When the ulnar nerve travels into the wrist it divides into two branches

A

Superficial- supply palmer aspect of little finer and half of ring finger

Deep

47
Q

What nerve causes claw hand?

A

Ulnar nerve

Aka ape hand

48
Q

What are the three muscles of the hypothenar eminence

A

Abductor digiti minimi

Flexor digiti minimi brevis

Opponents digiti minimi

49
Q

The ulnar nerve passes superior to the ______________ before dividing in the wrist

A

Flexor retinaculum

50
Q

Median nerve contains fibers from

A

C6,7,8 and T1

Contains contributions from lateral and medial cord

51
Q

The median nerve travels in the _______________ through the arm

A

Medial bicipital sulcus

GIVES OFF NO BRANCHES IN THE ARM

52
Q

Median nerve crosses the elbow _________ and between ________

A

Anterior side of elbow, two heads of pronator teres

53
Q

The median nerve supplies how many muscles

A

7 in the forearm
Pronator teres, flexor Carpi radialis, palmaris longus, flexor digitorum superficialis, pronator quadratus, flexor pollicis longus

54
Q

What nerve is given off by the median nerve in the elbow

A

Anterior interosseous nerve of the forearm

55
Q

The palmar branch of the median nerve supplies

A

Skin over thenar eminence, lateral wrist, palm

56
Q

Median nerve travels

A

Deep to flexor retinaculum

57
Q

Each common palmar digital nerve splits into

A

Two proper palmar digital nerves

SENSORY FUNCTION ONLY

58
Q

Hand of oath/ benediction is causes

A

Compression of median nerve and is present when patient makes a fist

59
Q

How many branches are off the posterior cord

A

5, superior subscapular nerve, thoracodorsal, inferior subscapular, axillary, radial nerves

60
Q

Superior subscapular nerve contains branches from

61
Q

The superior subscapular nerve supplies

A

Subscapularis

62
Q

Thoracodorsal nerve contains fibers from

63
Q

What does thoracodorsal nerve supply

A

Latissimus dorsi, travels along posterior axillary wall

64
Q

The inferior subscapular nerve contains fibers

65
Q

Inferior subscapular nerve supplies

A

Subscapularis and teres major

66
Q

Axillary nerve contains fibers from

67
Q

Axillary nerve travels

A

Posterior around surgical neck of humerus

68
Q

Axillary nerve supplies

A

Deltoid

Teres minor

69
Q

Axillary nerve gives off a sensory branch called

A

Superior lateral cutaneous nerve of the arm, supplies skin over the lateral shoulder and upper arm

70
Q

Radial nerve contains fibers from

A

C5,6,7,8, T1

71
Q

What supplies all the muscles of the posterior compartment of the arm and forearm

A

Radial nerve

72
Q

Radial nerve spirals around

A

To posterior of humerus from the medial bicipital sulcus

73
Q

The radial nerve passes on the _______ side if the elbow

A

Anterior and travels between brachialis and brachioradialis

74
Q

Where does the radial nerve divide into superior and deep branch

A

At the level of the radial head

75
Q

What branch of the radial nerve terminates as the posterior interosseous nerve

A

Deep branch of radial nerve

76
Q

Deep branch of the ulnar nerve gives off the

A

Posterior interosseous nerve

77
Q

The posterior cutaneous nerve of the arm branches off in the ________ and supplies __________.

A

Upper arm, posterior side of the upper arm

78
Q

The inferior lateral cutaneous nerve of the arm and branches off in the

A

Radial in the middle arm

79
Q

Radial nerve supplies

A

Triceps brachii

Anconeus

80
Q

The posterior cutaneous nerve of the forearm supplies

A

The narrow area of skin on the lateral side of the posterior forearm

81
Q

Posterior cutaneous nerve of the forearm branch off at the LATERAL EPICONDYLE to supply

A

Brachioradialis

Extensor carpi radialis longus

82
Q

The superficial branch of the radial nerve in the hand gives off

A

Dorsal digital nerves which provide sensory info

Also gives off communicating branch with the ulnar nerve

83
Q

The radial nerve sends _______ to the shoulder and wrist

A

Articular branches

84
Q

Supraclavicular damage mc occurs from

A

Birth trauma part of C5,6 roots

85
Q

What nerves does Erb-Duchenne involve

A

Suprascapular, musculocutaneous, axillary

86
Q

Infraclavicular nerve damage involves

A

C8, T1

Aka Klumpke

87
Q

Infraclavicular damage can result in

A

Horner’s syndrome- because of sympathetic at T1. Ptosis and miosis

PNS (11 decks)

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