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Block 1: Upper Limb > Axilla - Brachial Plexus > Flashcards

Axilla - Brachial Plexus Flashcards

1
Q

Dorsal scapular nerve roots?

A

C5

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2
Q

Long thoracic nerve roots?

A

C5 - C7

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3
Q

Suprascapular nerve roots?

A

C5, C6

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4
Q

Subclavian nerve roots?

A

C5, C6

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5
Q

Lateral pectoral nerve roots?

A

C5-C7

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6
Q

Medial Pectoral nerve roots?

A

C8, T1

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7
Q

Medial brachial cutaneous nerve roots?

A

T1

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8
Q

Medial Antebrachial cutaneous nerve roots?

A

C8, T1

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9
Q

Upper subscapular nerve roots?

A

C5, C6

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10
Q

Thoracodorsal (middle subscapular) nerve roots?

A

C6-C8

***C6 is an inconsistent contributor

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11
Q

Lower subscapular nerve root?

A

C5, C6

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12
Q

Musculocutaneous nerve roots?

A

C5-C7

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13
Q

Axillary nerve roots?

A

C5, C6

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14
Q

Radial nerve roots?

A

C5-C8, T1

***all brachial plexus nerve roots, BUT T1 IS INCONSISTENT CONTRIBUTOR

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15
Q

Ulnar nerve roots?

A

C8, T1

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16
Q

Median nerve roots?

A

C5-C8, T1

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17
Q

Cords of the brachial plexus are named in reference to the…

A

axillary artery

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18
Q

Roots pass between the…

A

anterior and middle scalene muscles

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19
Q

Divisions occur as the plexus passes behind the…

A

clavicle

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20
Q

the “M” in the brachial plexus is made up of what terminal nerves?

A

Musculocutaneous, median, ulnar

(all anterior branches)

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21
Q

Suprascapular nerve is going to run through what part of the scapula?

A

Suprascapular notch (superior notch)

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22
Q

Musculocutaneous nerve pierces what muscle and then travels where?

A

pierces the coracobrachialis muscle

travels inferior between the biceps brachii and brachialis

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23
Q

The musculocutaneous nerve continues as the…

A

Lateral antebrachial cutaneous nerve

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24
Q

Musculocutaneous nerve innervates…

A

anterior compartment of arm (biceps brachii, brachialis, coracobrachialis)

skin of the lateral aspect of the forearm (bc it continues as the LABC n)

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25
Q

The axillary nerve travels posteriorly with what artery in what space?

A

Posterior circumflex humeral artery

Quadrangular space

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26
Q

The axillary nerve continues as the…

A

Lateral brachial cutaneous nerve

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27
Q

Axillary nerve innervates…

A

deltoid, teres minor, GH joint

skin over superolateral arm (deltoid area)

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28
Q

The radial nerve enters the radial groove on the posterior humerus along with the…

A

deep (profunda) brachial artery

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29
Q

What nerve branches off of the radial nerve around mid-shaft of posterior humerus?

A

Posterior antebrachial cutaneous nerve

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30
Q

Radial nerve branches into the…

A

superficial and deep branches of the radial nerve

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31
Q

The deep branch of the radial nerve becomes the __________ once it passes the __________ in the forearm

A

Posterior (dorsal) Interosseous nerve

inferior border of the supinator muscle

32
Q

Radial nerve innervates…

A

posterior compartments of the arm and forearm

skin of posterior and inferolateral arm

skin of dorsum of hand (lateral to the axial line of digit 4)

33
Q

Median nerve travels with what artery?

A

Brachial artery

34
Q

Median nerve lies _______ to the brachial artery in the ________ fossa

A

Medial

Cubital fossa

35
Q

What nerve branches off the median nerve?

A

anterior interosseous nerve

36
Q

Median nerve innervates…

A

all flexor mm in forearm (EXCEPT the FCU and medial 2 tendons of FDP)

lateral 2 tendons of FDP

5 intrinsic muscles in thenar portion of the hand

lateral palmar skin (lateral to the axial line of digit 4)

37
Q

Ulnar nerve runs down medial aspect of arm posterior to the _________ of the humerus

A

medial epicondyle

38
Q

Ulnar nerve innervates…

A

FCU

Medial 2 tendons (ulnar half) of flexor digitorum profundus

most intrinsic mm of the hand

medial palmar skin (medial to the axial line of digit 4)

Dorsal medial to digit 3

39
Q

Lateral pectoral nerve passes _______ to the axillary artery

A

anterior

40
Q

Lateral pectoral nerve communicates with the _______ via a communicating branch

A

Medial pectoral nerve

41
Q

Lateral pectoral nerve innervates…

A

pec major muscle (clavicular head)

42
Q

Medial pectoral nerve travels between the _______ and _______

A

axillary artery

axillary vein

43
Q

Medial pectoral nerve innervates…

A

pec minor (sternocostal head)

44
Q

Medial pectoral nerve pierces what muscle?

A

pec minor

45
Q

Medial brachial cutaneous nerve travels with the _______ on the medial side of the arm

A

axillary vein

46
Q

Medial brachial cutaneous nerve supplies…

A

skin of medial arm

47
Q

Medial antebrachial cutaneous nerve supplies…

A

skin of medial forearm

48
Q

Medial antebrachial cutaneous nerve initially runs with the ______ and is often confused with it

A

ulnar nerve

49
Q

Medial antebrachial cutaneous nerve travels between the…

A

axillary artery and vein

50
Q

Upper subscapular nerve innervates…

A

superior portion of the subscapularis

51
Q

Lower subscapular nerve innervates:

A

inferior portion of subscapularis

teres major

52
Q

Lower subscapular nerve travels deep to what artery?

A

subscapular artery

53
Q

Thoracodorsal (middle subscapular) nerve runs inferolaterally along posterior axillary wall with the…

A

thoracodorsal artery

54
Q

Thoracodorsal nerve innervates…

A

latissimus dorsi

55
Q

C5, C6

A

Suprascapular
Subclavian
Upper subscapular
Lower subscapular
Axillary

56
Q

C5, C6, C7

A

Long thoracic
Lateral pectoral
Musculocutaneous

57
Q

C8, T1

A

Medial pectoral
Medial antebrachial cutaneous
Ulnar

58
Q

C5-C8, T1

A

Radial
Median

59
Q

Union of C5 & C6 roots

A

superior trunk

60
Q

Continuation of C7 root

A

Middle trunk

61
Q

Union of C8 & T1 roots

A

Inferior trunk

62
Q

Anterior divisions supply the

A

anterior compartment of the arm & forearm

63
Q

Posterior divisions supply the

A

posterior compartment of the arm & forearm

64
Q

Anterior & posterior divisions are named in reference to the…

A

axillary artery

65
Q

Anterior divisions of the superior & middle trunks form the

A

lateral cord

66
Q

Anterior divisions of the inferior trunk continues as the

A

Medial cord

67
Q

Posterior divisons of all 3 trunks unite to form the

A

posterior cord

68
Q

Lateral pectoral n. arises from

A

lateral cord

69
Q

Medial pectoral n. arises from

A

medial cord

70
Q

Terminal branch of the lateral cord

A

musculocutaneous n.

71
Q

Terminates from a combination of the lateral and medial cords

A

median n.

72
Q

Terminal branch from the medial cord

A

ulnar n.

73
Q

Smaller terminal branch of the posterior cord

A

axillary n.

74
Q

Largest terminal branch of the posterior cord

A

radial n.

75
Q

Branch of the lateral cord

A

lateral pectoral n.

76
Q

Branch of the medial cord

A

medial pectoral n.

77
Q

2 branches of the medial cord

A
  1. medial brachial n.
  2. medial antebrachial cutaneous n.

Block 1: Upper Limb (34 decks)

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