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MBLEx Study Guide > Muscles > Flashcards

Muscles Flashcards

1
Q

Deltoid - insertion

A

Deltoid tuberosity

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2
Q

Deltoid - action

A

All abduct the shoulder at glenohumeral joint Anterior - flexes shoulder at GH joint, medially roates shoulder at GH joint, and horizontaally adducts the shoulder at GH joint Posterior - Extends shoulder at GH joint, laterally rotates shoulder at GH joint, and horizontally adducts shoulder at GH joint

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3
Q

Deltoid - nerve

A

Axillary C5 and C6

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4
Q

Trapezius - origin

A

Occiput, ligamentum nuchae, and spinous processes C7 - T12

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5
Q

Trapezius - insertion

A

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

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6
Q

Trapezius - action

A

All extend the head and neck Upper - laterally flex head and neck to same side, rotate the head and neck to opposite side, elevate scapula Middle - adduct the scapula, stabilize the scapula Lower - depress the scapula, upwardly rotate the scapula

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7
Q

Trapezius - nerve

A

Spinal portion of cranial nerve XI (accessory) and ventral ramus C2 - C4

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8
Q

Latissiumus Dorsi - origin

A

inferior angle of scapula, spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis, and posterior iliac crest

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9
Q

Latissimus Dorsi - insertion

A

Intertubercular groove of humerus

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10
Q

Latissimus Dorsi - action

A

Extend the shoulder at GH joint, adduct the shoulder at GH joint, and medially rotate the shoulder at the GH joint

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11
Q

Latissimus Dorsi - nerve

A

thoracodorsal C6 - C8

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12
Q

Teres Major - origin

A

inferior angle and lower 1/3 lateral border of scapula

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13
Q

Teres Major - insertion

A

crest of lesser tubercle of humerus

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14
Q

Teres Major - Action

A

Extend shoulder at GH joint, adduct shoulder at GH joint, and medially rotate shoulder at GH joint

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15
Q

Teres Major - nerve

A

lower subscapular C5 - C7

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16
Q

What muscles are part of the Rotator Cuff Muscles

A

Supraspinatus Infraspinatus Teres Minor Subscapularis

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17
Q

Supraspinatus - origin

A

Supraspinous fossa of the scapula

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18
Q

Supraspinatus - insertion

A

Greater tubercle of humerus

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19
Q

Supraspinatus - Action

A

Abduct the shoulder at GH joint. stabilize head of humerus in glenoid cavity

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20
Q

Supraspinatus - nerve

A

Suprascapular C4 - C6

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21
Q

Teres Minor - origin

A

Upper 2/3 of lateral border of scapula

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22
Q

Teres Minor - insertion

A

Gerater tubercle of humerus

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23
Q

Teres Minor - action

A

laterally rotate shoulder at GH joint, adduct shoulder at GH joint, stabilize head of humerus in glenoid cavity

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24
Q

Teres Minor - nerve

A

Axillary C5 and C6

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25
Q

Infraspinatus - origin

A

infraspinous fossa of the scapula

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26
Q

Infraspinatus - insertion

A

Greater tubercle of humerus

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27
Q

Infraspinatus - action

A

laterally rotate shoulder at GH joint, adduct the shoulder at the GH joint, and stabilize head of humerus at glenoid cavity

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28
Q

Infraspinatus - nerve

A

Suprascapular C4 - C6

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29
Q

Subscapularis - origin

A

subscapular fossa of scapula

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30
Q

Subscapularis - insertion

A

Lesser tubercle of humerus

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31
Q

Suubscapularis - action

A

medially rotate shoulder at GH joint, Stabilize head of humerus

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32
Q

Subscapularis - nerve

A

upper and lower subscapular C5 - C7

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33
Q

Rhomboid Major - origin

A

Spinous processes of T2 - T5

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34
Q

Rhomboid Major - insertion

A

medial border of scapula b/w the spine of the scapula and the inferior angle

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35
Q

Rhomboid Major - action

A

adduct the scapula (scapulothoracic joint), Elevate the scapula at ST joint, downwardly rotate scapula at ST joint

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36
Q

Rhomboid Major - nerve

A

Dorsal scapular C4 and C5

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37
Q

Deltoid - origin

A

Anterior - lateral 1/3 of clavicle Lateral/middle - acromion Posterior - spine of scapula

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38
Q

Rhomboid Minor - origin

A

Spinous processes C7 - T1

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39
Q

Rhomboid Minor - insertion

A

upper portion of medial border of scapula across from the spine of the scapula

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40
Q

Rhomboid Minor - Action

A

Adduct scapula at ST joint, elevate scapula at ST joint, and downwardly rotate scapula at ST joint

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41
Q

Rhomboid minor - nerve

A

Dorsal scapular

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42
Q

Levator Scapula - origin

A

Transverse process of C1 - C4

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43
Q

Levator scapula - insertion

A

medial border of scapula, between superior angle and superior portion of spine of scapula

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44
Q

Levator scapula - action

A

elevate scapula at ST joint, downwardly rotate scapula at ST joint, laterally flex head and and neck, and rotate head and neck to the same side - bilaterally extend head and neck

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45
Q

Levator scapula - nerve

A

cervical C3 and C4 and Dorsal scapular C4 and C5

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46
Q

Serratus Anterior - origin

A

External surfaces of upper eight or nine ribs

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47
Q

Serratus Anterior - insertion

A

Anterior surface of medial border of the scapula

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48
Q

Serratus Anterior - action

A

with origin (ribs) fixed: Abduction of scapula at ST joint, upwardly rotate scapula at ST joint, depress scapula at ST joint, hold medial border of scapula against the rib cage with scapula fixed: may elevate border the thorax during forced inhalation

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49
Q

Serratus Anterior - nerve

A

long thoracic C5 - C8

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50
Q

Pectoralis Major - origin

A

medial 1/2 of clavicle, sternum and costal cartilage of ribs 1-6

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51
Q

Pectoralis Major - insertion

A

Crest of greater tubercle of humerus

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52
Q

Pectoralis Major - Action

A

All fibers: Adduct shoulder at GH joint, medially rotate at GH joint, and assist to elevate thorax during forced inhalation Upper fibers: Flex shoulder at GH joint, horizontally adduct shoulder at GH joint Lower fibers: Extend shoulder at GH joint

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53
Q

Pectoralis Major - nerve

A

Upper fibers: Lateral pectoral C5 - C7 Lower fibers: Lateral and medial pectoral C6 - T1

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54
Q

Pectoralis Minor - origin

A

3rd, 4th, and 5th ribs

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55
Q

Pectoralis minor - insertion

A

Medial surface of coracoid process of the scapula

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56
Q

Pectoralis Minor - action

A

Depress scapula at ST joint, abduct scapula at ST joint, downwardly rotate scapula at ST joint, may assist to elevate thorax during forced inhalation

57
Q

Pectoralis Minor - nerve

A

Medial pectoral and lateral pectoral C6 - T1

58
Q

Subclavius - origin

A

First rib and cartilage

59
Q

Subclavius - insertion

A

inferior surface of middle 1/3 of clavicle

60
Q

Subclavius - action

A

Depress clavicle and draw it anteriorly, elevate first rib (assist during inhalation), stabilize SC joint

61
Q

Subclavius - nerve

A

subclavian C5 and C6

62
Q

Biceps Brachii - origin short head

A

Short head: Coracoid process of scapula

63
Q

Biceps Brachii - origin long head

A

Long head: Supraglenoid tubercle of scapula

64
Q

Biceps Brachii - insertion

A

Radial tuberosity and bicipital aponeurosis

65
Q

Biceps Brachii - action

A

Flex the elbow (humeroulnar joint), Supinate forearm (radioulnar joint), and flex shoulder (glenohumeral joint)

66
Q

Biceps Brachii - nerve

A

musculocutaneous C5 and C6

67
Q

Triceps Brachii - origin long head

A

Long head: infraglenoid tubercle of scapula

68
Q

Triceps Brachii - origin lateral head

A

Lateral head: posterior surface of proximal half of humerus

69
Q

Triceps Brachii - origin medial head

A

Medial head: posterior surface of distal half of humerus

70
Q

Triceps Brachii - insertion

A

olecranon process of ulna

71
Q

Triceps Brachii - action

A

All: extend the elbow (humeroulnar joint) Long head: Extend shoulder (glenohumeral joint), adduct shoulder GH joint

72
Q

Triceps Brachii - nerve

A

Radial C6 - T1

73
Q

coracobrachialis - origin

A

coracoid process of scapula

74
Q

Coracobrachialis - insertion

A

medial surface of mid-humeral shaft

75
Q

Coracobrachialis - action

A

Flex shoulder at GH joint, adduct shoulder at GH joint

76
Q

Coracobrachialis - nerve

A

musculocutaneous C6 and C7

77
Q

Brachialis - origin

A

distal half of anterior surface of humerus

78
Q

Brachialis - insertion

A

tuberosity and coronoid process of ulna

79
Q

Brachialis - action

A

Flex elbow (humeroulnar joint)

80
Q

Brachialis - nerve

A

musculocutaneous, branch from radial C5 and C6

81
Q

Brachioradials - origin

A

proximal 2/3 of lateral supracondylar ridge of humerus

82
Q

Brachioradialis - insertion

A

styloid process of radius

83
Q

Brachioradialis - action

A

Flex elbow (humeroulnar joint), assist pronation and supination when there is resistance

84
Q

Brachioradialis - nerve

A

Radial C5 and C6

85
Q

Extensor Carpi Radialis Longus - origin

A

Distal 1/3 of lateral supracondylar ridge of humerus

86
Q

Extensor Carpi Radialis Longus - insertion

A

Base of 2nd metacarpal

87
Q

Extensor Carpi Radialis Longus - action

A

Extend wrist (radiocarpal joint), abduct wrist (radiocarpal joint), assist flexion of elbow (humeroulnar joint)

88
Q

Extensor Carpi Radialis Longus - nerve

A

Radial C5 - C8

89
Q

Extensor Carpi Radialis Brevis - origin

A

Common extensor tendon from lateral epicondyle of humerus

90
Q

Extensor Carpi Radialis Brevis - insertion

A

Base of 3rd metacarpal

91
Q

Extensor Carpi Radialis Brevis - action

A

extend wrist (radiocarpal joint), abduct wrist (radiocarpal joint), assist flexion of elbow (humeroulnar joint)

92
Q

Extensor Carpi Radialis Brevis - nerve

A

Radial C6 - C8

93
Q

Extensor Carpi Ulnaris - origin

A

Common extensor tendon of lateral epicondyle of humerus

94
Q

Extensor Carpi Ulnaris - insertion

A

Base of 5th metacarpal

95
Q

Extensor Carpi Ulnaris - action

A

Extend wrist (radiocarpal joint), adduct wrist (radiocarpal joint)

96
Q

Extensor Carpi Ulnaris - nerve

A

Radial C6 - C8

97
Q

Extensor Digitorum - origin

A

Common extensor tendon from the lateral epicondyle of humerus

98
Q

Extensor Digitorum - insertion

A

Bases of middle and and distal phalanges of 2nd - 5th fingers

99
Q

Extensor Digitorum - action

A

Extend 2nd - 5th fingers and assist extension of wrist (radiocarpal joint)

100
Q

Extensor Digitorum - nerve

A

Radial C6 - C8

101
Q

Anconeus - origin

A

lateral epicondyle of humerus

102
Q

Anconeus - insertion

A

Olecranon process and posterior, proximal surface of ulna

103
Q

Anconeus - action

A

extend elbow (humeroulnar joint)

104
Q

Anconeus - nerve

A

Radial C7 and C8

105
Q

Extensor Indicis - origin

A

Posterior surface of distal shaft of ulna and interosseous membrane

106
Q

Extensor Indicis - insertion

A

Tendon of extensor digitorum at 2nd metacarpal

107
Q

Extensor Indicis - action

A

extend 2nd finger (metacarpophalangeal joint), adduct 2nd finger, and may assit extension of wrist (radiocarpal joint)

108
Q

Extensor Indicis - nerve

A

Radial C6 - C8

109
Q

Flexor Carpi Radialis - origin

A

Common flexor tendon from medial epicondyle of humerus

110
Q

Flexor Carpi Radialis - insertion

A

Bases of 2nd and 3rd metacarpals

111
Q

Flexor Carpi Radialis - action

A

flex wrist (radiocarpal joint), abduct wrist (radiocarpal joint), assist flexion of elbow (humeroulnar joint)

112
Q

Flexor Carpi Radialis - nerve

A

Median C6 - C8

113
Q

Palmaris Longus - origin

A

Common flexor tendon medial epicondyle of humerus

114
Q

Palmaris Longus - insertion

A

Flexor retinaculum and palmar aponeurosis

115
Q

Palmaris Longus - action

A

Tense palmar fascia, flex wrist (radiocarpal joint), assist flexion of elbow

116
Q

Palmaris Longus - nerve

A

Median C6 - T1

117
Q

Flexor Carpi Ulnaris - origin

A

Humeral head: common flexor tendon medial epicondyle of humerus Ulnar head: Posterior surface of proximal 2/3 of ulna

118
Q

Flexor Carpi Ulnaris - insertion

A

Pisiform, hook of the hamate and base of 5th metacarpal

119
Q

Flexor Carpi Ulnaris - action

A

Flex wrist, adduct wrist, assist flexion of elbow

120
Q

Flexor Digitorum Superficialis - origin

A

Common flexor tendon medial epicondyle of humerus, ulnar collateral ligament, coronoid process of ulna, interosseous membrane and proximal shaft of radius

121
Q

Flexor Digitorum Superficialis - insertion

A

sides of middle phalanges of 2nd - 5th fingers

122
Q

Flexor Digitorum Superficialis - action

A

flex 2nd - 5th fingers and flex wrist

123
Q

Flexor Digitorum Superficialis - nerve

A

Median C7 - T1

124
Q

Flexor Digitorum Profundus - origin

A

Anterior and medial surfaces of proximal 3/4 of ulna

125
Q

Flexor Digitorum Profundus - insertion

A

Bases of distal phalanges, palmar surface of 2nd - 5th fingers

126
Q

Flexor Digitorum Profundus - action

A

flex 2nd - 5th fingers and assist flexion of wrist

127
Q

Flexor Digitorum Profundus - nerve

A

1st and 2nd - Median C7 - T1 3rd and 4th - Ulnar C7 - T1

128
Q

Pronator Teres - origin

A

Common flexor tendon medial epicondyle of humerus and coronoid process of ulna

129
Q

Pronator Teres - insertion

A

Middle of lateral surface of the radius

130
Q

Pronator Teres - action

A

Pronate forearm and assist flexion of elbow

131
Q

Pronator Teres - nerve

A

Median C6 and C7

132
Q

Pronator Quadratus - origin

A

medial, anterior surface of distal ulna

133
Q

Pronator Quadratus - insertion

A

lateral, anterior surface of distal radius

134
Q

Pronator quadratus - action

A

pronate forearm

135
Q

Pronator Quadratus - nerve

A

Median C7 - T1

136
Q

Supinator - origin

A

lateral epicondyle of humerus, radial collateral ligament, annular ligament and supinator crest of ulna

137
Q

Supinator - insertion

A

Anterior, lateral surface of proximal 1/3 of radial shaft

138
Q

Supinator - action

A

supinate forearm

139
Q

Supinator - nerve

A

radial C5 - C7

MBLEx Study Guide (4 decks)

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