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Anatomy > Muscles > Flashcards

Muscles Flashcards

1
Q

Deltoid origin

A

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

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2
Q

Deltoid Insertion

A

Deltoid tuberosity

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3
Q

Deltoid Innervation

A

Axillary nerve (C5,C6)

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4
Q

Deltoid action

A

Anterior deltoid:Flexes and medially rotates
Middle Deltoid: Abduction
Posterior Deltoid: Extension and Laterally rotates

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5
Q

Supraspinatus origin

A

Supraspinous fossa

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6
Q

Supraspinatus Insertion

A

Superior Facet of greater tubercle

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7
Q

Supraspinatus Innervation

A

Suprascapular nerve(C4,C5,C6)

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8
Q

Supraspinatus Action

A

Abduction of arm

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9
Q

Infraspinatus Origin

A

Infraspinous fossa

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10
Q

Infraspinatus Insertion

A

Middle Facet of greater tubercle

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11
Q

Infraspinatus Innervation

A

Suprascapular nerve(C5,C6)

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12
Q

Infraspinatus Action

A

Lateral rotation

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13
Q

Teres Minor origin

A

Middle portion of lateral border of scapula

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14
Q

Teres Minor Insertion

A

Inferior Facet of greater tubercle

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15
Q

Teres Minor Innervation

A

Axillary Nerve(C5,C6)

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16
Q

Teres Minor Action

A

Lateral Rotation

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17
Q

Pectoralis Major Origin

A

Clavicular head: Medial half of the clavicle

Sternal head: Sternum, superior 6 costal cartliages and aponeurosis of external obliques

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18
Q

Pectoralis Major Insertion

A

Lateral lip of the intertubecular sulcus

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19
Q

Pectoralis Major Innervation

A

Medial and lateral Pectoral nerves:
Clavicular head: C5,C6
Sternal head: C7, C8, T1

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20
Q

Pectoralis Major Action

A

Adduction and medially rotate humerus, pulls scapula anteriorly and inferiorly

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21
Q

Pectoralis Minor Origin

A

3rd-5th ribs near costal cartilages

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22
Q

Pectoralis Minor Insertion

A

Medial and superior border of coracoid process

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23
Q

Pectoralis Minor Innervation

A

Medial Pectoral nerve C8 T1

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24
Q

Pectoralis Minor Action

A

Stabilization and draw scapula inferiorly and anteriorly to thoracic wall

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25
Q

Subclavius Origin

A

Junction of 1st rib and its costal cartilage

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26
Q

Subclavius Insertion

A

internal surface of middle third of clavicle

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27
Q

Subclavius Innervation

A

Nerve to subclavius C5,C6

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28
Q

Subclavius Action

A

Anchors and depresses clavicle

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29
Q

Serratus Anterior Origin

A

External Surface of 1-8th ribs

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30
Q

Serratus Anterior Insertion

A

Anterior Medial Border of scapula

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31
Q

Serratus Anterior Innervation

A

Long Thoracic Nerve(C5,C6,C7)

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32
Q

Serratus Anterior Action

A

Protraction and holds against thoracic wall, rotates scapula

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33
Q

Teres Major Origin

A

Posterior surface of inferior angle of scapula

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34
Q

Teres Major Insertion

A

Medial lip of intertubecular groove

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35
Q

Teres Major Innervation

A

Lower Subscapular Nerve(C5,C6)

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36
Q

Teres Major Action

A

Adducts and medial rotates

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37
Q

Subscapularis Origin

A

Subscapular fossa

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38
Q

Subscapularis Insertion

A

Lesser Tubercle

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39
Q

Subscapularis Innervation

A

Upper and Lower Subscapular nerve(C5,C6,C7)

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40
Q

Biceps Brachii Origin

A

Long Head: Supraglenoid Tubercle of Scapula

Short Head: tip of coracoid process of scapula

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41
Q

Biceps Brachii Insertion

A

Tuberosity of the radius and fascia via bicipital aponeurosis

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42
Q

Biceps Brachii Innervation

A

Musculocutaneous Nerve(C5, C6, C7)

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43
Q

Biceps Brachii Action

A

Supination and Flexion of the forearm

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44
Q

Coracobrachialis Origin

A

tip of th coracoid prosess

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45
Q

Coracobrachialis Insertion

A

Middle Medial shaft of the humerus

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46
Q

Coracobrachialis Innervation

A

Musculocutaneous Nerve(C5,C6,C7)

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47
Q

Coracobrachialis Action

A

Adduction and flexion

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48
Q

Brachialis Origin

A

Dital half of the anterior surface of humerus

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49
Q

Brachialis Insertion

A

Coronoid process and tuberosity of the ulna

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50
Q

Brachialis Innervation

A

Musculocutaneous Nerve(C5,C6,C7), Radial Nerve (C5,C6)

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51
Q

Brachialis Action

A

Flexes forearm in all postitions(main muscle for forearm flexion)

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52
Q

Triceps Brachii Origin

A

Long Head: Infraglenoid Tubercle of the scapula
Lateral Head: Posterior surface of humerus superior to the radial groove
Medial Head: posterior surface of humerus inferior to the radial groove

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53
Q

Triceps Brachii Insertion

A

Olecranon Process of ulna and fascia of forearm

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54
Q

Triceps Brachii Innervation

A

Radial Nerve(C6,C7,C8)

55
Q

Triceps Brachii Action

A

Extension of the forearm

56
Q

Anconeus Origin

A

Lateral epicondyle of humerus

57
Q

Anconeus Insertion

A

Lateral surface of the olecranon and superior part of posterior surface of ulna

58
Q

Anconeus Innervation

A

Radial Nerve(C7, C8, T1)

59
Q

Anconeus Action

A

Extends forearm, stabilize elbow joint and abduct ulna during pronation

60
Q

Pronator Teres Origin

A

Ulnar Head: Coronoid Process

Humeral Head: Epicondyle of Humerus

61
Q

Pronator Teres Insertion

A

medial convexity of lateral surface of the radius

62
Q

Pronator Teres Innervation

A

Median Nerve(C6,C7)

63
Q

Pronator Teres Action

A

Pronation and flexes forearm

64
Q

Flexor Carpi Radialis Origin

A

Medial Epicondyle of humerus

65
Q

Flexor Carpi Radialis Insertion

A

base of 2nd metacarpal

66
Q

Flexor Carpi Radialis Innervation

A

Median Nerve(C6,C7)

67
Q

Flexor Carpi Radialis Action

A

flexes hand and tenses palmer aponeurosis

68
Q

Palmaris Longus Origin

A

Medial Epicondyle of humerus

69
Q

Palmaris Longus Insertion

A

flexes and abducts hand

70
Q

Palmaris Longus Innervation

A

Median Nerve(C7,C8)

71
Q

Palmaris Longus Action

A

flexes hand and tenses the palmar aponeurosis

72
Q

Flexor Carpi Ulnaris Origin

A

Humeral Head: Medial epicondyle of humerus

Ulnar head: Olecranon and posterior border

73
Q

Flexor Carpi Ulnaris Insertion

A

Pisiform, Hook of hamate and 5th metacarpal

74
Q

Flexor Carpi Ulnaris Innervation

A

Ulnar Nerve(C7,C8)

75
Q

Flexor Carpi Ulnaris Action

A

Flex and adduct hand

76
Q

Flexor Digitorum Superficialis Origin

A

Humeroulnar Head: Medial Epicondyle

Radial Head: Superior half of anterior border

77
Q

Flexor Digitorum Superficialis Insertion

A

Shafts of middle phalanges of medial 4 digits

78
Q

Flexor Digitorum Superficialis Innervation

A

Median Nerve(C7,C8,T1)

79
Q

Flexor Digitorum Superficialis Action

A

Flexes middle phalanges at proximal interphalangeal joint of middle 4 digits; flexes proximal phalanges at metacarpophalangeal joints

80
Q

Flexor Digitorum Profundus Origin

A

proximal 3/4 of medial and anterior surfaces of ulna and interosseous membrane

81
Q

Flexor digitorum Profundus Insertion

A

Medial Part: Bases of distal phalanges of 4th and 5th digits

Lateral Part: Bases of distal phalanges of 2nd and 3rd digits

82
Q

Flexor Digitorum Profundus Innervation

A

Medial: Ulnar nerve(C8,T1)
Lateral: Anterior interosseous Nerve(C8, T1)

83
Q

Flexor digitorum Profundus Action

A

medial:flexes distal 4th and 5th phalanges interphalanges joint
Lateral:flexes distal 2nd and 3rd phalanges at interphalangeal joint

84
Q

Flexor Pollicis Longus Origin

A

Anterior Surface of radius and adjacent interosseous membrane

85
Q

Flexor Pollicis Longus Insertion

A

base of distal phalanx of thumb

86
Q

Flexor Pollicis Longus Innervation

A

Anterior Interosseous nerve(C8,T1)

87
Q

Flexor Pollicis Longus Action

A

Flexes phalanges of 1st digit

88
Q

Pronator Quadratus Origin

A

distal 1/4 of anterior surface of the ulna

89
Q

Pronator Quadratus Insertion

A

Distal 1/4 of the anterior surface of the radius

90
Q

Pronator Quadratus Innervation

A

Anterior Interosseous Nerve(C8,T1)

91
Q

Pronator Quadratus Action

A

Pronates forearm

92
Q

Brachioradialis Origin

A

Proximal 2/3 of supraepicondylar ridge of humerus

93
Q

Brachioradialis Insertion

A

Lateral surface of the distal end of the radius proximal to the styloid process

94
Q

Brachioradialis Innervation

A

Radial Nerve(C5, C6, C7)

95
Q

Brachioradialis Action

A

weak flexion of forearm

96
Q

Extensor Carpi Radialis Longus Origin

A

Lateral supraepicondylar of humerus

97
Q

Extensor Carpi Radialis Longus Insertion

A

Dorsal aspect of base of 2nd metacarpal

98
Q

Extensor Carpi Radialis Longus Innervation

A

Radial Nerve(C6,C7)

99
Q

Extensor Carpi Radialis Longus Action

A

Extend and abduct hand

100
Q

Extensor Carpi Radialis Brevis Origin

A

Lateral epicondyle of humerus

101
Q

Extensor Carpi Radialis Brevis Insertion

A

Dorsal aspect of base of 3rd metacarpal

102
Q

Extensor Carpi Radialis Brevis Innervation

A

Deep Branch of radial nerve(C7,C8)

103
Q

Extensor Carpi Radialis Brevis Action

A

Extend and abduct hand

104
Q

Extensor Digitorum Origin

A

Lateral epicondyle of humerus

105
Q

Extensor digitorum Insertion

A

Extensor expansions of medial 4 digits

106
Q

Extensor Digitorum Innervation

A

deep branch of radial nerve(c7,C8)

107
Q

Extensor digiti Minimi Origin

A

Lateral Epicondyle of humerus

108
Q

Extensor Digiti Minimi Insertion

A

Extensor expansion of 5th digit

109
Q

Extensor Digiti Minimi Innervation

A

Deep Branch of radial nerve(C7,C8)

110
Q

Extensor Digiti Minimi Action

A

extends 5th digit primarily at metacarpophlangeal joint

111
Q

Extensor Carpi Ulnaris Origin

A

Lateral epicondyle of humerus, posterior border of ulna

112
Q

Extensor Carpi Ulnaris Insertion

A

Dorsal aspect of base of 5th metacarpal

113
Q

Extensor Carpi Ulnaris Innervation

A

Deep Branch of the Radial Nerve(C7,C8)

114
Q

Extensor Carpi Ulnaris Action

A

extends and adducts hand at wrist joint

115
Q

Supinator Origin

A

Lateral epicondyle of humerus, radial collateral and anular ligaments, supinator fossa and crest of ulna

116
Q

Supinator Insertion

A

lateral posteriorand anterior surfaces of the proximal 1/3 of radius

117
Q

Supinator Innervation

A

Deep Branch of Radial nerve(C7,C8)

118
Q

Supinator Action

A

supinates forearm, rotates radius to turn palm anteriorly and superiorly

119
Q

Extensor Indicis Origin

A

Posterior Surface of distal 1/3 of ulna and interosseous membrane

120
Q

Extensor Indicis Insertion

A

Extensor Expansion of 2nd digit

121
Q

Extensor Indicis Innervation

A

Posterior Interosseous Nerve(C7,C8)

122
Q

Extensor Indicis Action

A

extends 2nd digit and hand

123
Q

Abductor Pollicis Longus Origin

A

Posterior surface of proximal halves of ulna, radius and interosseous membrane

124
Q

Abductor Pollicis Longus Insertion

A

Base of 1st metacarpal

125
Q

Abductor Pollicis Longus Innervation

A

Posterior Interosseous Nerve(C7,C8)

126
Q

Abductor Pollicis Longus Action

A

abduct thumbs and extends at the carpometaparal joint

127
Q

Extensor Pollicis Longus Origin

A

Posterior surface of middle 1/3 of ulna and interosseous membrane

128
Q

Extensor Pollicis Longus Insertion

A

dorsal aspect of base of distal phalanx of thumb

129
Q

Extensor Pollicis Longus Innervation

A

Posterior Interosseous Nerve(C7,C8)

130
Q

Extensor Pollicis Longus Action

A

extends distal phalanx of thumb at interphalangeal joint, extend metacarpophalangeal and carpometacarpal joint

131
Q

Extensor Pollicis Brevis Origin

A

Posterior surface of distal 1/3 of radius and interosseous membrane

132
Q

Extensor Pollicis Brevis Insertion

A

dorsal aspect of base of proximal phalanx of thumb

133
Q

Extensor Pollicis Brevis Innervation

A

Posterior Interosseous Nerve (C7, C8)

134
Q

Extensor Pollicis Brevis Action

A

extends proximal phalanx of thumb at metacarpophalngeal joint, extends carpometacarpal joint

Anatomy (24 decks)

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