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Upper limb > muscles > Flashcards

muscles Flashcards

1
Q

PA of pectoralis major clavicular head

A

medial half of clavicle

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2
Q

PA of pectorals major sternocostal head

A

anterior sternum
superior 6 costal cartilages

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3
Q

DA of pectoralis major

A

lateral lip of intertubercular groove

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4
Q

NS of pectoralis major

A

lateral and medial pectoralis nerves

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5
Q

action of pectoralis major

A

adducts and medially rotates humerus
(clavicle head flexes humerus)

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6
Q

PA of pectoralis minor

A

3-5th rib near their costal cartilages

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7
Q

DA of pectoralisminor

A

coracoid process of the scapula

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8
Q

NS of pectoralis minor

A

medial pectoral nerve

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9
Q

action of pectoralis minor

A

stabilises scapula by drawing it inferiorly and anteriorly on thoracic cage

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10
Q

PA of subclavius

A

junction of the 1st rib and costal cartilage

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11
Q

DA of subclavius

A

inferior surface of the middle third of the clavicle

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12
Q

NS of subclavius

A

nerve to subclavius

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13
Q

action of subclavius

A

anchors and depresses clavicle

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14
Q

PA of serratus anterior

A

external surface of lateral parts of ribs 1-8

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15
Q

DA of serratus anterior

A

anterior surface of medial border of scapula

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16
Q

NS of serratus anterior

A

long thoracic nerve

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17
Q

action of serratus anterior

A

protracts scapula and holds it on thoracic wall, rotates scapula (glenoid fossa superiorly)

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18
Q

PA of trapezius

A

superior nuchal line
external occipital protuberance
nuchal ligament
SPs of C7-T12 vertebrae

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19
Q

DA of trapezius

A

lateral third of clavicle
acromion
spine of the scapula

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20
Q

NS of trapezius

A

accessory nerve (CN XI) (motor)
C3,4 spinal nerves

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21
Q

action of trapezius

A

superior - elevates scapula
middle (& all parts) - retracts scapula
inferior - depresses scapula
superior and inferior - rotate glenoid fossa superiorly

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22
Q

PA of latissimus dorsi

A

SPs of inferior 6 thoracic vertebrae
thoracolumbar fascia
iliac crest
inferior 3-4 ribs

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23
Q

DA of latissimus dorsi

A

floor of the intertubercular groove

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24
Q

NS of latissimus dorsi

A

thoracodorsal nerve

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25
Q

action of latissimus dorsi

A

extends
adducts
medially rotates the humerus

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26
Q

PA of levator scapulae

A

transverse processes of C1-4 vertebrae

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27
Q

DA of levator scapulae

A

medial border of the scapula superior to the spine of the scapula

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28
Q

NS of levator scapulae

A

dorsal scapular nerve
cervical nerves C3,4

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29
Q

action of levator scapulae

A

elevates scapula and inferiorly rotates glenoid fossa

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30
Q

PA of rhomboid minor

A

nuchal ligament
spinous processes of C7-T1

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31
Q

PA of rhomboids major

A

spinous processes of T2-T5

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32
Q

DA of rhomboid minor

A

medial end of scapula spine

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33
Q

DA of rhomboid major

A

medial border of scapula, below spine

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34
Q

NS of rhomboids

A

dorsal scapular nerve

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35
Q

action of rhomboids

A

retract scapula
inferiorly rotate glenoid fossa
fix scapula against thoracic wall

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36
Q

PA of deltoid

A

lateral third of clavicle, acromion and spine of scapula

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37
Q

DA of deltoid

A

deltoid tuberosity of humerus

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38
Q

NS of deltoid

A

axillary nerve

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39
Q

action of deltoid

A

anterior - flexes and medially rotates arm
middle - abducts arm
posterior - extends and laterally rotates arm

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40
Q

PA of teres major

A

posterior surface of inferior angle of scapula

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41
Q

DA of teres major

A

medial lip of the intertubercular groove

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42
Q

NS of teres major

A

lower subscapular nerve

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43
Q

action of teres major

A

adducts and medially rotates the arm

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44
Q

PA of supraspinatus

A

supraspinous fossa of scapula

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45
Q

DA of supraspinatus

A

superior facet of the greater tuberscle of humerus

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46
Q

NS of supraspinatus

A

suprascapular nerve

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47
Q

action of supraspinatus

A

initiates and assists deltoid in abduction of arm
stabilises GH joint

48
Q

PA of infraspinatus

A

infraspinous fossa of scapula

49
Q

DA of infraspinatus

A

middle facet of the greater tubercle of the humerus

50
Q

NS of infraspinatus

A

suprascapular nerve

51
Q

action of infraspinatus

A

laterally rotates humerus
stabilises GH joint

52
Q

PA of teres minor

A

middle part of the lateral border of the scapula

53
Q

DA of teres minor

A

inferior facet of the greater tubercle of the humerus

54
Q

NS of teres minor

A

axillary nerve

55
Q

action of teres minor

A

laterally rotates humerus
stabilises GH joint

56
Q

PA of subscapularis

A

subscapular fossa

57
Q

DA of subscapularis

A

lesser tubercle of the humerus

58
Q

NS of subscapularis

A

upper and lower subscapular nerve

59
Q

action of subscapularis

A

medially rotates arm
stabilises the GH joint

60
Q

PA of biceps brachii short head

A

coracoid process

61
Q

PA of biceps brachii long head

A

supraglenoid tubercle of scapula

62
Q

DA of biceps brachii

A

radial tuberosity of the radius
fascia of the forearm via the bicipital aponeurosis

63
Q

NS of biceps brachii

A

musculocutaneous nerve

64
Q

action of biceps brachii

A

supinates forearm
flexes forearm (supinated)
short head resists downwards dislocation of humerus

65
Q

PA of coracobrachialis

A

coracoid process of scapula

66
Q

DA of coracobrachialis

A

middle third of medial humerus

67
Q

NS of coracobrachialis

A

musculocutaneous nerve

68
Q

action of coracobrachialis

A

assists in flexion and adduction of the arm
resists shoulder dislocation

69
Q

PA of brachialis

A

distal half of anterior surface of humerus

70
Q

DA of brachialis

A

coronoid process and tuberosity of ulna

71
Q

NS of brachialis

A

musculocutaneous nerve

72
Q

action brachialis

A

flexes forearm in all positions

73
Q

PA of triceps brachii long head

A

infraglenoid tubercle of the scapula

74
Q

PA of triceps brachii lateral head

A

posterior surface of humerus
superior to radial groove

75
Q

PA of triceps brachii medial head

A

post surface of humerus
inferior to radial groove

76
Q

DA of triceps brachii

A

olencranon process of ulna

77
Q

NS of triceps brachii

A

radial nerve

78
Q

action of triceps brachii

A

extension of forearm
long head prevents downward dislocation of humerus

79
Q

PA of anconeus

A

lateral epicondyle of the humerus

80
Q

DA of anconeus

A

olecranon of ulna

81
Q

NS of anconeus

A

radial nerve

82
Q

action of anconeus

A

assists triceps inextension of forearm

83
Q

PA of pronator teres humeral head

A

medial epicondyle of humerus

84
Q

PA of pronator teres ulnar head

A

coronoid process

85
Q

DA of pronator teres

A

lateral surface of the radius, middle section

86
Q

NS of pronator teres

A

median nerve

87
Q

action of pronator teres

A

pronates and flexes forearm

88
Q

PA of flexor carpi radialis

A

medial epicondyle of humerus

89
Q

DA of flexor carpi radialis

A

anterior base of 2nd metacarpal

90
Q

NS of flexor carpi radialis

A

median nerve

91
Q

action of flexor carpi radialis

A

flexes and radially deviates (abducts) hand at wrist joint

92
Q

PA of palmaris longus

A

medial epicondyle of humerus

93
Q

DA of palmaris longus

A

flexor retinaculum and palmer aponeurosis

94
Q

NS of palmaris longus

A

median nerve

95
Q

action of palmaris longus

A

flexes hand at wrist joint and tenses palmer aponeurosis

96
Q

PA of flexor carpi ulnaris humeral head

A

medial epicondyle of humerus

97
Q

PA of flexor carpi ulnaris ulnar head

A

olecranon process of ulna

98
Q

DA of flexor carpi ulnaris

A

pisiform
hook of hamate \and 5th metatarsal anteriorly

99
Q

NS of flexor carpi ulnaris

A

ulnar nerve

100
Q

action of flexor carpi ulnaris

A

flexes and ulnar deviates (adducts) hand at wrist joint

101
Q

PA of flexor digitorum superficialis

A

medial epicondyle of humerus
anterior surface of radius

102
Q

DA of flexor digitorum superficialis

A

middle phalanges of medial 4 digits (2-5)

103
Q

NS of flexor digitorum superficialis

A

median nerve

104
Q

action of flexor digitorum superficialis

A

flexes middle phalanges
results in prox and MCP joint flexion

105
Q

PA of flexor digitorum profundus

A

medial and anterior surfaces of proximal ulna and interosseous membrane

106
Q

DA of flexor digitorum profundus

A

distal phalanges of medial 4 digits (2-5)

107
Q

NS of flexor digitorum profundus lateral half

A

median nerve

108
Q

NS of flexor digitorum profundus medial half

A

ulnar nerve

109
Q

action of flexor digitorum profundus

A

flexes distal phalanges at the DIPs

110
Q

PA of flexor pollicis longus

A

distal anterior radius
interosseous membrane

111
Q

DA of flexor pollicis longus

A

distal phalanx of thumb

112
Q

NS of flexor pollicis longus

A

median nerve

113
Q

action of flexor pollicis longus

A

flexes phalanges of the thumb

114
Q

PA of pronator quadratus

A

distal quarter of anterior ulna

115
Q

DA of pronator quadratus

A

distal quarter of anterior radius

116
Q

NS of pronator quadratus

A

median nerve

117
Q

action of pronator quadratus

A

pronates the forearm

Upper limb (1 decks)

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