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Anat 1 > Shoulder Complex Joint Rot Cuff > Flashcards

Shoulder Complex Joint Rot Cuff Flashcards

Anatomy

1
Q

sensory supply to shoulder: supraclavicular nerves from the?

A

cervical plexus C3-4

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2
Q

sensory supply to shoulder: supraclavicular nerves supply?

A

the skin over clavicle and over the superior-lateral aspect of the pectoralis major

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3
Q

sensory supply to shoulder: cutaneous branches of dorsal rami penetrate?

A

deep and superficial back muscles

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4
Q

sensory supply to shoulder: cutaneous branches of dorsal rami supply?

A

skin on either side of midline of back

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5
Q

joints of the shoulder complex: 3

A

1 sternoclavicular
2 acromioclavicular
3 glenohumeral

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6
Q

sternoclavicular: articulating bones (3)

A

1 articular notch on sternum
2 sternal end of clavicle
3 first costal cartilage

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7
Q

sternoclavicular: structural type

A

synovial, shallow/saddle, articular disc

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8
Q

sternoclavicular: articular disc aka

A

fibrocartilage meniscus

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9
Q

sternoclavicular: articular disc attatched to

A

superior to clavicle

inferior to manubrium and first costal cartilage

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10
Q

sternoclavicular: functional type

A

diarthrotic, triaxial

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11
Q

acromioclavicular: articulating bones (2)

A

1 concave facet of acromion process

2 convex facet on lateral end of clavicle

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12
Q

acromioclavicular: structural type

A

synovial, plane

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13
Q

acromioclavicular: functional type

A

triaxial, diarthrotic, gliding and rotation

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14
Q

acromioclavicular: movements (3)

A

1 scapular rotation
2 winging
3 tipping

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15
Q

glenohumeral: articulating bones (2)

A

1 glenoid fossa of scapula

2 head of humerus

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16
Q

glenohumeral: structural type

A

synovial, ball and socket

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17
Q

glenohumeral: functional type

A

triaxial, diarthrotic, flexion/extension, abduction/adduction, circumduction, rotation

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18
Q

glenohumeral: ligaments (3)

A

1 glenohumeral
2 coracohumeral
3 coracoacromial

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19
Q

glenohumeral: glenoid labrum

A

fribrocartilage meniscus

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20
Q

superficial extrinsic muscles include: (5)

A 
1 trapezius
2 latissimus dorsi
3 levator scapulae
4 rhomboideus major
5 rhomboideus minor
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21
Q

superficial extrinsic muscles connect what to what?

A

upper limb to axial skeleton

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22
Q

superficial extrinsic muscles innervated by

A

ventral rami/CN XI

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23
Q

trapezius innervation

A

CN XI and ventral rai of 3rd and 4th cervical nerves

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24
Q

trapezius proximal attachment: upper

A

external occipital protuberance, superior nuchal line, and ligamentum nuchae, and spinous process of CV 7

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25
Q

trapezius proximal attachment: middle

A

spinous processes of TV 1-6

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26
Q

trapezius proximal attachment: lower

A

spinous processes of TV 7-12

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27
Q

trapezius distal attachment: upper

A

lateral 3rd of clavicle

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28
Q

trapezius distal attachment: middle

A

acromion and crest of scapular spine

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29
Q

trapezius distal attachment: lower

A

tubercle of scapular spine

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30
Q

trapezius action: upper

A

elevates scapula

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31
Q

trapezius action: middle

A

adducts (retracts) scapula

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32
Q

trapezius action: lower

A

depresses scapula

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33
Q

trapezius action: upward rotate scapula via

A

upper and lower fibers

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34
Q

trapezius: blood supply

A

dorsal scapular artery

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35
Q

latissimus dorsi: innervation

A

thoracodorsal nerve (C6-8)

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36
Q

latissimus dorsi: proximal attachment

A

spines of TV 7-12 and lumbar sacral vertebrae, posterior iliac crest, and ribs 9-12

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37
Q

latissimus dorsi: distal attachment

A

floor of intertubercular (bicipital) groove

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38
Q

latissimus dorsi: action

A

extends, addducts, and internally rotates the humerus

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39
Q

latissimus dorsi: blood supply

A

thoracodorsal artery and a branch of the subscapular artery

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40
Q

levator scapulae: innervation

A

cervical nerves C3-5 and dorsal scapular nerve C5

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41
Q

levator scapulae: proximal attachment

A

transverse processes of CV 1-4

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42
Q

levator scapulae: distal attachment

A

medial border of scapula at level of and above the spine

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43
Q

levator scapulae: action

A

elevates the scapula at the superior (medial) angle and assists in the downward rotation of the scapula

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44
Q

levator scapulae: blood supply

A

dorsal scapular artery

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45
Q

rhomboids: innervation

A

dorsal scapular nerve (C5)

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46
Q

rhomboids: proximal attachment

A

spines of CV 7 and TV 1 and lower end of ligamentum nuchae (minor)
spines of TV 2-4 (major)

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47
Q

rhomboids: distal attachment

A

medial border of scapula from level of the spine inferiorly to the inferior angle

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48
Q

rhomboids: action

A

adducts scapula
rotates glenoid fossa downward
fixes scapula thoracic wall

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49
Q

rhomboids: blood supply

A

dorsal scapular artery

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50
Q

subclavius: origin

A

junction of first rib and costal cartialge 1

51
Q

subclavius: insertion

A

inferior surface of middle third of clavicle

52
Q

subclavius: action

A

anchors and depresses clavicle

53
Q

subclavius: innervation

A

nerve to subclavius (C5, C6)

54
Q

pectoralis major: innervation

A 
lateral and medial pectoral nerves
clavicular head (c5, c6)
sternal head (c7, c8, t1)
55
Q

pectoralis major: origin

A

anterior surface of medial half of clavicular head
anterior surface of manubrium and sternal head
costal cartilages 2-6
aponeurosis of external oblique

56
Q

pectoralis major: insertion

A

crest of greater tubercle

57
Q

pectoralis major: action

A

adducts and medially rotates arm
flexes arm
extends arm
draws scapula anteriorly and inferiorly

58
Q

pectoralis minor: innervation

A

medial pectoral nerve (C8, T1)

59
Q

pectoralis minor: origin

A

ribs 3-5 near costal cartilages

60
Q

pectoralis minor: insertion

A

coracoid process (3 muscles attach)

61
Q

pectoralis minor: action

A

stabilizes scapula

62
Q

what muscles attach the scapula to the humerus? (3)

A

1 deltoid
2 teres major
3 serratus anterior

63
Q

what are the rotator cuff muscles? (4)

A

1 supraspinatus
2 infraspinatus
3 teres minor
4 subscapularis

64
Q

serratus anterior: innervation

A

long thoracic nerve (C5, C6, C7)

65
Q

serratus anterior: proximal attachment

A

external surface of lateral parts of ribs 1-8

66
Q

serratus anterior: distal attachment

A

anterior surface of medial border of scapula

67
Q

serratus anterior: action

A

protracts scapula, fixes scapula to thoracic wall, rotates scapula

68
Q

serratus anterior: blood supply

A

lateral thoracic artery

69
Q

deltoid: innervation

A

axillary nerve (c5, c6)

70
Q

deltoid: proximal attachment

A

lateral 1/3 of clavicle, acromion and spine of scapula

71
Q

deltoid: distal attachment

A

deltoid tuberosity of humerus

72
Q

deltoid: action

A

flexes, medially rotates, abducts, extends, and laterally rotates humerus

73
Q

deltoid: blood supply

A

deltoid branch of thoracoacromial artery

74
Q

3 muscles of the deltoid?

A 
1 spinodeltoid
2 acromiodeltoid
3 cleidodeltoid (clavodeltoid)
75
Q

teres major: innervation

A

lower subscapular nerve (C5, C6)

76
Q

teres major: proximal attachment

A

posterior surface of inferior angle of scapula

77
Q

teres major: distal attachment

A

medial lip of intertubercular (bicipital) groove of humerus

78
Q

teres major: action

A

adducts and medially rotates humerus

79
Q

teres major: blood supply

A

circumflex scapular artery (lower subscapular)

80
Q

scapulothoracic joint: how joint moves

A

sliding of scapula on thoracic cage

81
Q

coracoacromial arch components: (3)

A

1 acromion process
2 coracoid process
3 coracoacromial ligament

82
Q

quadrilateral space: boundaries (4)

A

1 inferior glenohumeral capsule
2 teres major
3 triceps longus
4 surgical neck of humerus

83
Q

quadrilateral space: contents

A

axillary nerve and posterior circumflex humeral artery

84
Q

elevation (scapula) accomplished by what muscles?

A

levator scapulae and rhomboids

85
Q

depression (scapula) accomplished by what muscle?

A

latissimus dorsi

86
Q

abduction (scapula) accomplished by what muscle?

A

serratus anterior

87
Q

abduction (shoulder) accomplished by what muscles?

A

middle deltoid and biceps brachii assists

88
Q

upward rotation (scapula) accomplished by what muscles?

A

serratus anterior and upper and lower trapezius (force couple)

89
Q

downward rotation (scapula) accomplished by what muscles?

A

rhomboids and levator scapulae

90
Q

scapulothoracic joint: how joint moves

A

sliding of scapula on thoracic cage

91
Q

coracoacromial arch components: (3)

A

acromion process
coracoid process
coracoacromial ligament

92
Q

rotator cuff’s 4 muscles?

A 
1 supraspinatus
2 infraspinatus
3 teres minor 
4 subscapularis
SITS
93
Q

involved in snubbing and rotating the head of humerus

A

rotator cuff

94
Q

supraspinatus: innervation

A

suprascapular nerve (C4, C5, C6)

95
Q

supraspinatus: proximal attachment

A

supraspinous fossa of scapula

96
Q

supraspinatus: distal attachment

A

superior facet of greater tubercle of humerus

97
Q

supraspinatus: action

A

works with deltoid in abduction of humerus, acts with other rotator cuff muscles in stabilizing shoulder joint

98
Q

supraspinatus: blood supply

A

suprascapular artery

99
Q

infraspinatus: innervation

A

suprascapular nerve (c5, c6)

100
Q

infraspinatus: proximal attachment

A

infraspinous fossa of scapula

101
Q

infraspinatus: distal attachment

A

middle facet of greater tubercle of humerus

102
Q

infraspinatus: action

A

laterally rotates humerus, helps hold humeral head in place

103
Q

infraspinatus: blood supply

A

suprascapular artery

104
Q

teres minor: innervation

A

axillary nerve (c5, c6)

105
Q

teres minor: proximal attachment

A

middle part of lateral border of scapula

106
Q

teres minor: distal attachment

A

inferior facet of greater tubercle of humerus

107
Q

teres minor: action

A

laterally rotates humerus, helps hold humeral head in place

108
Q

teres minor: blood supply

A

circumflex scapular artery

109
Q

subscapularis: innervation

A

upper and lower subscapular nerves (C5, C6, C7)

110
Q

subscapularis: proximal attachment

A

subscapular fossa of scapular (anterior surface)

111
Q

subscapularis: distal attachment

A

lesser tubercle of humerus

112
Q

subscapularis: action

A

medially rotates and adducts humerus

helps hold humeral head in place

113
Q

subscapularis: blood supply

A

suprascapular artery

114
Q

force couple =

A

rotate the scapula

115
Q

glenohumeral joint components (2)

A

1 head of humerus

2 glenoid fossa of scapula

116
Q

glenoid labrum is and does…

A

is a fibrocartilage meniscus and deepens articulating surface of glenoid fossa

117
Q

superior and inferior acromioclavicular ligaments reinforce?

A

the joint capsule

118
Q

coracoclavicular ligament lateral portion is the

A

trapezoid ligament

119
Q

coracoclavicular ligament medial portion is the

A

conoid ligament

120
Q

scapulohumeral rhythm: steps in arm abduction (4)

A 
1 movement (searching) of scapula (serratus ant)
2 snubbing of head of humerus into glenoid fossa (rotator cuff)
3 first few degrees of abduction (supraspinatus)
4 external rotation of humerus (infraspinatus)
121
Q

deltoid paralysis caused by damage to

A

axillary nerve

122
Q

serratus anterior paralysis cause by damage to

A

long thoracic nerve

123
Q

tears in rotator cuff usu happents in

A

supraspinatus

Anat 1 (19 decks)

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