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Mia's Anatomy: Unit 3 > Axilla & Brachial Plexus > Flashcards

Axilla & Brachial Plexus Flashcards

1
Q

Pyramidal shaped region between arm & chest

A

Axilla

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2
Q

Pectoral major & pectorals minor muscles make up what wall of the axilla region

A

Anterior wall

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3
Q

Latissimus dorsi, teres major & subscapularis muscles make up what wall of the axilla region

A

Posterior pall

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4
Q

Serratus anterior muscles make up what wall of the axilla region

A

Medial wall

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5
Q

Intertubercular sulcus of humerus make up what wall of the axilla region

A

Lateral wall

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6
Q

Skin & Fascia of armpit make up what wall of the axilla region

A

Base

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7
Q

The area under the clavicle to the skin of the part is what region

A

Axilla

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8
Q

the top of the Axilla region can be referred to as the

A

apex or inlet

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9
Q

What runs through the axially region

A

Axial sheath

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10
Q

The axial sheath starts at a superior _______ position and runs through the axial to an inferior _______ position

A

Medial, Lateral

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11
Q

What does the positioning of the axial sheath through the axial allow for

A

range of motion

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12
Q

A fibrous sheath that encloses the axillary artery and the axillary vein and the three cords of the brachial plexus to form the neurovascular bundle

A

Axillary sheath

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13
Q

Muscles if the lateral wall of the axilla include

A

Coracobrachialis, Long and short heads of the Biceps

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14
Q

Where is the Coracobrachialis muscle located in the Axilla

A

posterior portion of lateral wall

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15
Q

Where is the short head of Biceps located in the lateral wall of the axilla

A

anteromedially

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16
Q

Where is the long head of Biceps located in the lateral wall of the axilla

A

anterolaterally

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17
Q

When comparing lymph nodes and vessels what should you look for to detriment that you’re looking at a vessel not a node

A

Lumen

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18
Q

Axillary sheath, which contains axillary artery & brachial plexus are contented in what

A

Axilla

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19
Q

The subclavian vein and the internal jugular vein make up the

A

Venous angle

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20
Q

Lymphatics coalescence in what area

A

Axilla

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21
Q

What lymph node collects from the anterior thoracic wall & most of breast

A

Pectoral node

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22
Q

What lymph node collects from the posterior thoracic wall & scapular region

A

Subscapular node

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23
Q

What lymph node collects from the upper limb except for the portion along the cephalic vein

A

Humeral node

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24
Q

What lymph node do the Pectoral, Subscapular and Humeral nodes drain into

A

Central nodes

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25
Q

What node collects from the Central node as well as the proximal cephalic v nodes

A

Apical Node

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26
Q

What are the two main lymph nodes in the body

A

right lymphatic duct and thoracic duct

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27
Q

What are the right lymphatic duct and thoracic duct located

A

At the venous angle

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28
Q

3-4 large nodes deep to pectoralis minor

A

central nodes

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29
Q

receive lymph from all the other groups of axillary nodes as well as the proximal cephalic vein nodes

A

apical nodes

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30
Q

The nerve components within the axilla

A

Brachial plexus

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31
Q

part of the axillary artery that is between 1st rib & pec. minor m.

A

First part

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32
Q

Part of the axillary artery that is underlying pectoralis minor muscle

A

Second part

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33
Q

Part of the axillary artery that is between pectoralis minor & teres major

A

Third part

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34
Q

The axillary artery gives rise to what artery at the inferior border of the teres major muscle

A

Brachial A.

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35
Q

Arises from the subclavian a. at the lateral border of the 1st rib

A

Axillary A.

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36
Q

What are the three parts of the Axillary A.

A

1st, 2nd, 3rd

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37
Q

Superior thoracic a comes off of what part of the axillary A.

A

1st

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38
Q

Thoracoacromial trunk comes off of what part of the axillary A.

A

2nd

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39
Q

Lateral Thoracic a. comes off of what part of the axillary A.

A

2nd

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40
Q

Subscapular a. comes off of what part of the axillary A.

A

3rd

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41
Q

Posterior Circumflex Humeral aa. comes off of what part of the axillary A.

A

3rd

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42
Q

Anterior Circumflex Humeral aa. comes off of what part of the axillary A.

A

3rd

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43
Q

Composed of ventral rami from C5-T1

A

Brachial Plexus

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44
Q

What nerve is the Trapezius muscle innervated by

A

CN XI

45
Q

Provides nerves for all upper limb muscles except trapezius muscle

A

Brachial plexus

46
Q

There are _ cervical nerves and _ cervial vertebrae

A

8,7

47
Q

C1-C7 nerves emerge (above/ below) C1-C7 vertebrae

A

Above

48
Q

C8 nerve emerges (above/below) C7 vertebra

A

Below

49
Q

All other spinal nerves emerge (above/below) vertebrae of same number

A

Below

50
Q

Spinal nerves exist the vertebrae column via the

A

intervertebral foramen

51
Q

which spinal nerve does not exist the vertebral column via the intervertebral foramen

A

C1

52
Q

The 5 ventral rami from C5-T1 converge to for

A

3 Trucks

53
Q

The 3 trucks of the brachial plexus divide into

A

6 divisions

54
Q

Where do the 3 trunks of the brachial plexus form

A

Lower neck

55
Q

Where to the 6 divisions of the brachial plexus split

A

Behind the clavicle

56
Q

The 6 divisions of brachial plexus converge into

A

3 cords

57
Q

The 3 cords of the brachial plexus are located in the

A

Axillary region

58
Q

The 3 cords of the brachial plexus split into

A

5 branches

59
Q

The 5 branches of the brachial plexus split off in the

A

Upper arm

60
Q

What does all the converging and splitting of the brachial plexus occurs

A

Axillary artery

61
Q

C5 and C6 rami converge to form

A

Upper trunk

62
Q

What does C7 ramus form

A

middle trunk

63
Q

What joins C7 to form the middle trunk?

A

Nothing

64
Q

C8 and T1 rami converge to form

A

Lower trunk

65
Q

The upper, middle, and lower trunks split to form

A

Anterior and posterior divisions (6)

66
Q

All three posterior divisions converge to for the

A

Posterior cord

67
Q

The posterior cord is made up of ____ posterior divisions

A

all three

68
Q

Contains the anterior contributions from the upper and middle trunks

A

Lateral cord

69
Q

Anterior contributions from C5 C6 C7 form the

A

Lateral cord

70
Q

The posterior cord has contributions from

A

C5-T1

71
Q

The anterior portion of the lower trunk forms the

A

Medial cord

72
Q

The medial cord contains contributions form

A

C8-T1

73
Q

Terminal branch of the brachial plexus that is comprised of C5, C6, & C7

A

Musculocutaneous

74
Q

Terminal branch of the brachial plexus that is comprised of C5-T1

A

Median & radial

75
Q

Terminal branch of the brachial plexus that is comprised of C5-C6

A

Axillary

76
Q

Terminal branch of the brachial plexus that is comprised of C8 & T1

A

Ulnar

77
Q

There terminal branches of the brachial plexus forms an M and a Y shape in which the Y portion if positioned

A

Posteriorly

78
Q

There terminal branches of the brachial plexus forms an M and a Y shape in which the M portion if positioned

A

Anteriorly

79
Q

Formed from lateral cord

A

Musculocutaneous N

80
Q

Passes thru coracobrachialis muscle and Enters biceps brachii & brachialis muscles

A

Musculocutaneous N

81
Q

Major nerve of the anterior arm (flexion)

A

Musculocutaneous N

82
Q

Innervates coracobrachialis, biceps & ½ of brachialis muscle

A

Musculocutaneous N

83
Q

Formed from ½ lateral cord & ½ medial cord

A

Median N.

84
Q

Passes medial to arm muscles

A

Median N.

85
Q

Major nerve of the anterior forearm

A

Median N.

86
Q

Innervates most of the anterior forearm, 3 thenar eminence mm. & 1st 2 lumbricals in hand

A

Median N.

87
Q

Formed from medial cord

A

Ulnar N.

88
Q

Runs behind medial epicondyle

A

Ulnar N.

89
Q

Major nerve of the hand

A

Ulnar N.

90
Q

Innervates most of the mm of the hand, Flexor Carpi ulnaris m & ulnar ½ Flexor Carpi ulnaris in forearm

A

Ulnar N.

91
Q

The Axillary N. and Radial N are formed from the

A

Posterior cord

92
Q

Circles behind humerus in quadrangular space to innervate deltoid & teres minor muscles

A

Axillary N.

93
Q

Passes posterior to humerus in radial groove and found within triangular interval

A

Radial N.

94
Q

Major nerve of the posterior arm & forearm

A

Radial N.

95
Q

Innervates all mm in both regions + ½ of brachialis m.

A

Radial N.

96
Q

Nerve that is responsible for extension of arm and forearm

A

Radial N.

97
Q

Formed directly from rami, trunks, & cords of the brachial plexus

A

other nerves

98
Q

Branches off of C5 and innervates rhomboid & levator scapulae muscles

A

Dorsal Scapular n. (C5)

99
Q

traveling with lateral thoracic anterior A. and innervates serratus anterior muscle

A

Long Thoracic n. (C5-C7)

100
Q

Innervates supraspinatus & infraspinatus muscles

A

Suprascapular n. (C5-C6)

101
Q

Serves pectoralis major

A

Lateral Pectoral n. (C5-C7)

102
Q

Serves pectoralis major & minor muscles

A

Medial Pectoral n. (C8-T1)

103
Q

Comes off the posterior cord

A

Lower plexus

104
Q

Innervates subscapularis muscle

A

Upper Subscapular n. (C5-C6)

105
Q

Innervates latissimus dorsi muscle

A

Thoracodorsal n. (C6-C8)

106
Q

Innervates subscapularis & teres major muscles

A

Lower Subscapular n. (C5-C6)

107
Q

sensory to medial arm

A

Medial brachial cutaneous n. (C8-T1)

108
Q

sensory to medial forearm

A

Medial antibrachial cutaneous n. (C8-T1)

Mia's Anatomy: Unit 3 (7 decks)

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