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Anatomy > Muscles (Exam 1) > Flashcards

Muscles (Exam 1) Flashcards

1
Q

Trapezius attachments

A

Superior nuchal line, external occipital protuberance, ligamentum
to
clavicle, acromion, crest of spine of scapula

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2
Q

Trapezius innervation

A 
Motor = CN XI (accessory nerve)
Sensory = C3-4
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3
Q

Levator scapulae innervation

A

Dorsal scapular nerve

sensory

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4
Q

Trapezius action

A

Scapular elevation, depression, retraction, and upward rotation

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5
Q

Levator scapulae attachments

A

C1-C4 transverse processes
to
superior angle & border of scapula

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6
Q

Levator scapulae actions

A

scapular elevation and downward rotation

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7
Q

Rhomboids attachments (Major & Minor)

A

Major: T2-T5 spinal processes, Minor: ligamentum nuchae, C7-T1
TO
medial border of scapula

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8
Q

Rhomboids innervation

A

dorsal scapular nerve

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9
Q

Rhomboids actions

A

scapular retraction, elevation, downward rotation

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10
Q

Serratus anterior attachments

A

Ribs 8-10
to
costal surface of medial border of scapula

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11
Q

serratus anterior innervation

A

long thoracic nerve

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12
Q

serratus anterior actions

A

scapular protraction and upward rotation

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13
Q

Latissimus dorsi attachments

A

Lower thoracic spinal processes, thoracolumbar fascia, iliac crest
to
intertubercular sulcus of humerus

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14
Q

Latissimus dorsi innervation

A

thoracodorsal nerve

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15
Q

latissimus dorsi actions

A

adduction, extension, and medial rotation of humerus

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16
Q

pectoralis major attachments

A

clavicle, costal cartilage, sternum, aponeurosis of external oblique
to
lateral lip of intertuburcular sulcus of humerus

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17
Q

pectoralis major innervation

A

medial and lateral pectoral nerves

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18
Q

pectoralis major actions

A

adduction, flexion, medial rotation of humerus

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19
Q

pectoralis minor attachments

A

ribs 3-5 outer surface
to
coracoid process

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20
Q

pectoralis minor innervation

A

medial and lateral pectoral nerves

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21
Q

pectoralis minor actions

A

anterior scapula tilt, assists with depression & forced inspiration

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22
Q

subclavius attachments

A

1st rib
to
undersurface of clavicle

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23
Q

subclavius innervation

A

subclavian nerve

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24
Q

subclavius actions

A

depression & stabilizing clavicle

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25
Q

deltoid attachments

A

clavicle, acromion, spine of scapula
to
deltoid tuberosity of humerus

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26
Q

deltoid innervation

A

axillary nerve

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27
Q

deltoid actions

A

anterior portion: flexion and medial rotation
middle: abduction
posterior: extension and lateral rotation, horizontal extension
of humerus

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28
Q

Supraspinatus attachments

A

medial 2/3 of supraspinous fossa
to
superior facet of greater tubercle of humerus and shoulder joint capsule

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29
Q

supraspinatus innervation

A

suprascapular nerve

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30
Q

supraspinatus actions

A

initiates humeral abduction and lateral rotation

stabilizes glenohumeral joint

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31
Q

infraspinatus attachments

A

medial 2/3 of infraspinous fossa
to
middle facet of greater tubercle of humerus and shoulder joint capsule

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32
Q

infraspinatus innervation

A

suprascapular nerve

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33
Q

infraspinatus actions

A

lateral rotation of humerus

glenohumeral joint stabilization

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34
Q

teres minor attachments

A

upper 2/3 of dorsal surface of lateral border of scapula
to
inferior facet of the greater tubercle of humerus & joint capsule

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35
Q

teres minor innervation

A

axillary nerve

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36
Q

teres minor actions

A

lateral rotation of humerus

glenohumeral stabilization

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37
Q

subscapularis attachments

A

subscapular fossa
to
lesser tubercle of humerus

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38
Q

subscapularis innervation

A

upper & lower subscapular nerves

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39
Q

subscapularis actions

A

medial rotation of humerus

glenohumeral stabilization

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40
Q

teres major attachments

A

dorsal surface of inferior angle of scapula & lower 1/3 of lateral border
to
medial lip of intertubercular sulcus of humerus

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41
Q

teres major innervation

A

lower subscapular nerve

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42
Q

teres major actions

A

humeral adduction, medial rotation, extension

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43
Q

Internal (medial) rotators of the humerus

A 
Pectoralis major
Deltoid (anterior head)
Teres major
Latissimus dorsi
Subscapularis
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44
Q

External (lateral) rotators of the humerus

A

Posterior head of the Deltoid
Infraspinatus
Supraspinatus
Teres minor

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45
Q

Upward rotators of the scapula

A

Trapezius

Serratus anterior

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46
Q

Downward rotators of the scapula

A

Levator scapulae

Rhomboids

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47
Q

Muscles that cause scapular retraction (adduction)

A

Rhomboids

Trapezius

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48
Q

Muscles that cause scapular protraction (abduction)

A

Serratus anterior
Serratus posterior superior
Pectoralis minor

49
Q

Muscles innervated by the dorsal scapular nerve

A

Rhomboids

Levator scapulae

50
Q

Muscles innervated by the axillary nerve

A

Deltoid

Teres minor

51
Q

Muscles innervated by the suprascapular nerve

A

Supraspinatus

Infraspinatus

52
Q

Muscles innervated by the lower subscapular nerve

A

teres major

subscapularis

53
Q

Anconeus attachments

A

lateral epicondyle of humerus
to
lateral surface of the olecranon process

54
Q

Anconeus actions

A

elbow extension

55
Q

Anconeus innervation

A

radial nerve

56
Q

Biceps brachii attachments

A

short head: coracoid process
long head: supraglenoid tubercle
to
radial tuberosity and deep antebrachial fascia

57
Q

Biceps brachii actions

A

should & elbow flexion

forearm supination

58
Q

biceps brachii innervation

A

musculocutaneous nerve

59
Q

brachialis attachments

A

distal anterior shaft of humerus & lateral and medial intermuscular septa
to
coronoid process & ulnar tuberosity

60
Q

brachialis actions

A

elbow flexion

61
Q

brachialis innervation

A

musculocutaneous & small branch of radial n.

62
Q

coracobrachialis attachments

A

coracoid process
to
proximal medial shaft of humerus

63
Q

coracobrachialis actions

A

shoulder flexion and adduction

64
Q

coracobrachialis innervation

A

musculocutaneous nerve

65
Q

triceps brachii attachments

A

infraglenoid tubercle of the scapula (long head), proximal posterolateral shaft of humerus (lateral head), and distal posteromedial shaft of humerus (medial head)
to
olecranon process of ulna

66
Q

triceps brachii actions

A 
shoulder extension (long head)
elbow extension (long, medial, lateral heads)
67
Q

triceps brachii innervation

A

radial nerve

68
Q

brachioradialis attachments

A

lateral supracondylar ridge of humerus
to
distal radius lateral to styloid process

69
Q

brachioradialis actions

A

elbow flexion

70
Q

brachioradialis innervation

A

radial nerve

71
Q

Elbow flexors

A

Biceps brachii, brachialis, brachioradialis

72
Q

elbow extensors

A

anconeus, triceps brachii

73
Q

Muscles innervated by the radial nerve

A

triceps brachii, anconeus (small branch to brachialis)

74
Q

Muscles innervated by the musculocutaneous nerve

A

biceps brachii, coracobrachialis, brachialis

75
Q

Abductor pollicis longus attachments

A

Proximal posterior radius, ulna, & interosseous membrane
To
Base of 1st metacarpal & trapezium

76
Q

Abductor pollicis longus actions

A

Abducts & extends thumb (carpometacarpal joint)

Abducts hand at wrist (RADIAL DEVIATION)

77
Q

Brachioradialis attachments

A

Lateral supracondylar ridge of humerus
To
Distal radius later to styloid process

78
Q

Brachioradialis action

A

Elbow flexion

79
Q

Extensor carpi radialis brevis

A

Lateral epicondyle of humerus
To
Base of 3rd metacarpal

80
Q

Extensor carpi radialis brevis actions

A

Extension & radial deviation

81
Q

Extensor carpi ulnaris attachments

A

Lateral epicondyle of humerus
To
Base of 5th metacarpal

82
Q

Extensor carpi ulnaris action

A

Extension and ulnar deviation

83
Q

Extensor digitorum attachments

A

Lateral epicondyle of the humerus
To
Extensor expansions of digits 2-5

84
Q

Extensor digitorum action

A

Phalangeal extension & wrist extension

85
Q

Extensor digiti minimi attachments

A

Lateral epicondyle of humerus
To
Digital expansion of 5th digit

86
Q

Extensor digiti minimi action

A

Extension of 5th digit

87
Q

Extensor indicis attachments

A

Posterior surface of ulna & interosseous membrane
To
Digital expansion of 2nd digit

88
Q

Extensor indicis action

A

Extension of 2nd digit

89
Q

Extensor pollicis brevis attachments

A

Posterior radial surface & interosseous membrane
To
Base of 1st proximal phalanx

90
Q

Extensor pollicis brevis actions

A

Thumb extension

Extension & abduction of CMC joint

91
Q

Extensor pollicis longus attachments

A

Middle 1/3 of posterior surface of ulna & interosseous membrane
To
Membrane of base of 1st distal phalanx

92
Q

Extensor pollicis longus actions

A

Thumb extension

93
Q

Flexor carpi radialis attachments

A

Medial epicondyle
To
Palmar aspect of base of 2nd metacarpal

94
Q

Flexor carpi radialis

A

Radial deviation

Wrist flexion

95
Q

Flexor carpi ulnaris attachments

A

Medial epicondyle of humerus & proximal ulnar shaft
To
pisiform

96
Q

Flexor carpi ulnaris actions

A

Ulnar deviation, wrist flexion

97
Q

Flexor digitorum profundus attachments

A

Anterior proximal 2/3 of ulna
To
Base of distal phalanges of digits 2-5

98
Q

Flexor digitorum profundus actions

A

Digits 2-5 flexion, wrist flexion

99
Q

Flexor digitorum superficialis attachments

A

Medial epicondyle
To
Side of middle phalanges of digits 2-5

100
Q

Flexor digitorum superficialis actions

A

Flexion of digits and wrist

101
Q

Flexor pollicis longus attachments

A

Anterior surface of radius
To
Base of distal phalanx of thumb

102
Q

Flexor pollicis longus action

A

Thumb flexion

103
Q

Palmaris longus attachments

A

Medial epicondyle of humerus
To
Palmar aponeurosis

104
Q

Palmaris longus actions

A

Wrist flexion, tenses palmar fascia

105
Q

Pronation quadratus attachments

A

Anterior surface of distal ulna
To
Anterior surface of distal radius

106
Q

Pronoator quadratus action

A

Forearm pronation

107
Q

Pronation Teres attachments

A

Medial epicondyle & ulnar coronoid process
To
Lateral aspect of radius

108
Q

Pronator Teres actions

A

Forearm flexion and pronation

109
Q

Supinator attachments

A

Lateral epicondyle of humerus, radial collateral ligament, & supinator crest of ulna
To
Lateral surface of proximal radius

110
Q

Supinator action

A

Supinate forearm

111
Q

Dorsal Interosseous actions

A

Abduct digits
Flexion at metacarpalphalangeal joints
Extension at interphalangeal joints via extensor expansions

112
Q

Dorsal interossei innervation

A

Deep branch of ulnar nerve

113
Q

Palmar interossei muscles are located where

A

Digits 2, 4, 5

114
Q

Palmar interossei actions

A

Digit Adduction
Flexion at metacarpophalanageal joints
Extension of index, ring and pinky finger at IPJ

115
Q

Palmar interossei innervation

A

Deep branch of ulnar nerve

116
Q

Lumbrical actions

A

Refinement muscles
Flex at MCP
Extend at IPJ

117
Q

Lumbrical innervation

A

1 & 2 = median nerve

3-4 = ulnar nerve

118
Q

Innervation of abductor pollicis brevis

A

Median nerve

119
Q

Innervation of flexor pollicis brevis

A

Recurrent branch of median nerve

Anatomy (17 decks)

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