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3A - Random Stuff for 3rd Year Exam > Anatomy - Upper Limb Muscles > Flashcards

Anatomy - Upper Limb Muscles Flashcards

1
Q

Kind of joint is sterno-clavicular

A

Synovial saddle

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2
Q

Kind of joint is acromioclavicular

A

Synovial plane

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3
Q

Deltoid - attachment

A

Origin - lateral third of clavicle, acromion and spine of scapula

Insertion - deltoid tuberosity on humerus

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4
Q

Deltoid - innervation

A

Axillary nerve

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5
Q

Deltoid

A

Anterior - flexion and medial rotation

Posterior - extension and lateral rotation

Middle - abduction

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6
Q

Teres major - attachments

A

Origin - posterior surface of inferior angle of scapula

Insertion - intertubercular groove of hymerus

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7
Q

Teres major - innervation

A

Lower subscapular nerve

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8
Q

Teres major - action

A

Adducts and extends shoulder

Medially rotates arm

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9
Q

What are the 4 rotary cuff muscles

A

Supraspinatus

Infraspinatus

Subscapularis

Teres minor

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10
Q

Supraspinatus - attachments

A

Origin - supraspinous fossa of scapula

Insertion - greater tubercle of humerus

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11
Q

Supraspinatus - innervation

A

Suprscapular nerve

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12
Q

Supraspinatus - actions

A

Abduction

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13
Q

Infraspinatus - attachments

A

Origin - infraspinous fossas

Insertion - greater tubercle of humerus

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14
Q

Infraspinatus - innervation

A

Suprascapular nerve

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15
Q

Infraspinatus - actions

A

Laterally rotates arm

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16
Q

Subscapularis - attachments

A

Origin - subscapular fossa

Insertion - lesser tubercle of humerus

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17
Q

Subscapularis - innervation

A

Upper and lower subscapular nerves

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18
Q

Subscapularis - actions

A

Medially rotates arm

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19
Q

Teres minor - attachments

A

Origin - posterior surface of scapula

Insertion - greater tubercle of humerus

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20
Q

Teres minor- innervation

A

Axillary nerve

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21
Q

Teres minor - actions

A

Laterally rotates arm

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22
Q

Trapezius - attachments

A

Origin - skull, spinous processes C7-T12

Insertion - clavicle, acromion and scapula spine

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23
Q

Trapezius - innervation

A

Accessory nerve

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24
Q

Trapezius - actions

A

Upper - elevates scapula

Middle - retracts scapula

Lower - depresses scapula

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25
Q

Latissimus dorsi - attachments

A

Origin - spinous processes T6-T12, thoracolumbar fascia, iliac crest and inferior 3 ribs

Insertion - intertubucular sulcus of humerus

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26
Q

Latissimus dorsi - innervation

A

Thoracodorsal nerve

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27
Q

Latissimus dorsi - actions

A

Extends, adducts and medially roates upper limb

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28
Q

Levator scapulae - attachments

A

Origin - transverse processes of C1-C4

Insertion - medial border of scapula

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29
Q

Levator scapulae - innervation

A

Dorsal scapular nerve

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30
Q

Levator scapulae - actions

A

Elevates scapula

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31
Q

Rhomboideus major - attachments

A

Origin - spinous processes T2-T5

Insertion - medial border of scapula

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32
Q

Rhomboideus major - innervation

A

Dorsal scapular nerve

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33
Q

Rhomboideus major - actions

A

Retracts and roates scapula

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34
Q

Rhomboideus minor - attachments

A

Origin - spinous processes of C7-T1

Insertion - medial border of scapula

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35
Q

Rhomboideus minor - innervation

A

Dorsal scapular nerve

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36
Q

Rhomboideus minor - actions

A

Retracts and rotates scapula

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37
Q

Bicep brachii - attachments

A

Long head origin - supraglenoid tubercle of scapula

Short head origin - coracoid process

Insertion of both - radial tuberosity and fascia of forearm via bicipital aponeurosis

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38
Q

Bicep brachii - innervation

A

Musculocutaneous nerve

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39
Q

Bicep brachii - actions

A

Supination of forearm

Flexion of shoulder

Flexion of elbow

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40
Q

Coracobrachialis - attachments

A

Origin - coracoid process of scapula

Insertion - medial side of humeral shaft

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41
Q

Coracobrachialis - innervation

A

Musculocutaneous nerve

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42
Q

Coracobrachialis - actions

A

Flexion of shoulder

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43
Q

Brachialis - attachments

A

Origin - medial and lateral humeral shaft

Insertion - ulnar tuberosity

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44
Q

Brachialis - innervation

A

Musculocutaneous nerve, with contribution from radial

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45
Q

Brachialis - actions

A

Flexion of elbow

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46
Q

Tricep brachi - attachments

A

Long head origin - infraglenoid tubercle

Lateral head origin - humerus superior to radial groove

Medial head origin - humerus, inferior to radial groove

Insertion - olecranon of ulna

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47
Q

Tricep brachii - innervation

A

Radial nerve

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48
Q

Tricep brachii - action

A

Extension of arm at elbw

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49
Q

Flexor carpi ulnaris - attachments

A

Origin - medial epicondyle

Insertion - pisiform carpal bone

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50
Q

Flexor carpi ulnaris - innervation

A

Ulnar nerve

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51
Q

Flexor carpi ulnaris - actions

A

Flexion and adduction of wrist

52
Q

Palmaris longus - attachments

A

Origin - medial epicondyle

Insertion - flexor retinaculum of wrist

53
Q

Palmaris longus - innervation

A

Median nerve

54
Q

Palmaris longus - actions

A

Flexion of wrist

55
Q

Flexor carpi radialis - attachments

A

Origin - medial epicondyle

Insertion - base of metacarpals II and III

56
Q

Flexor carpi radialis - innervation

A

Median nerve

57
Q

Flexor carpi radialis - actions

A

Flexion and abduction at wrist

58
Q

Pronator teres - attachements

A

Origin - medial epicondyle and coronoid process of ulna

Insertion - mid shaft of radius

59
Q

Pronator teres - innervation

A

Median nerve

60
Q

Pronator teres - actions

A

Pronator of forearm

61
Q

Flexor digitorum superficialis - attachments

A

Origin - medial epicondyle of humerus and from radius

Insertion - 4 tendons travel through carpal tunnel to middle phalanges of fingers

62
Q

Flexor digitorum superficialis - innervation

A

Median nerve

63
Q

Flexor digitorum superficialis - actions

A

Flexes metecarpophalangeal, proximal interphalangeal and wrist joints

64
Q

Flexor digitorum profundus - attachments

A

Origin - ulnar and associated interosseous membrane

Insertion - splits into 4 tendons at wrist and attaches to distal phalanges of 4 fingers

65
Q

Flexor digitorum profundus - innervation

A

Medial half (acts on little and ring fingers) by ulnar

Lateral half (middle and index fingers) by anterior interosseous branch of median nerve

66
Q

Flexor digitorum profundus - actions

A

Flexion of distal interphalangeal joints, metacarpophalangeal joints and wrist

67
Q

Flexor pollicis longus - attachments

A

Origin - anterior surface radius

Insertion - distal phalanx of thumb

68
Q

Flexor pollicis longus - innervation

A

Median nerve (anterior interosseous branch)

69
Q

Flexor pollicis longus - actions

A

Flexion of interphalangeal joint and metacarpophalangeal joint of thumb

70
Q

Pronator quadratus - attachment

A

Origin - anterior surface of ulna

Insertion - anterior surface of radius

71
Q

Pronator quadratus - innervation

A

Median nerve (anterior interosseous branch)

72
Q

Pronator quadratus - actions

A

Pronation of forearm

73
Q

Brachioradialis - attachments

A

Origin - proximal aspect of lateral supracondyler ridge of humerus

Insertion - distal end of radius just before styloid process

74
Q

Brachioradialis - innervation

A

Radial nerve

75
Q

Brachioradialis - actions

A

Flexion of elbow

76
Q

Extensor carpi radialis longus and brevis - attachments

A

ECRL origin - supracondylar ridge

ECRB - lateral epicondyle

Insertion - metacarpal bones II and III

77
Q

Extensor carpi radialis longus and brevis - innervation

A

Radial nerve

78
Q

Extensor carpi radialis longus and brevis - actions

A

Extends and abducts wrist

79
Q

Extebsir digitorum communis - attachments

A

Origin - lateral epicondyle

Insertion - splits into 4 tendons, inserts into extensor hood each finger

80
Q

Extensor digitorum communis - innervation

A

Radial nerve (deep branch)

81
Q

Extensor digitorum communis - actions

A

Extends medial 4 fingers at MCP and IP joints

82
Q

Extensor digiti minimi - attachments

A

Origin - lateral epicondyle of humerus

Insertion - with the extensor digitorum tendon into extensor hood of little finger

83
Q

Extensor digiti minimi - innervation

A

Radial nerve (deep branch)

84
Q

Extensor digiti minimi - actions

A

Extension of little finger, contributes to extension of wrist

85
Q

Extensor carpi ulnaris - attachments

A

Origin - lateral epicondyle

Insertion - base of metacarpal V

86
Q

Extensor carpi ulnaris - innervation

A

Radial nerve (deep branch)

87
Q

Extensor carpi ulnaris - actions

A

Extension and adduction of wrist

88
Q

Anconeus - attachments

A

Origin - lateral epicondyle

Insertion - olecranon

89
Q

Anconeus - innervation

A

Radial nerve

90
Q

Anconeus - actions

A

Extension of elbow

Abducts the ulna during pronation of forearm

91
Q

Supinator - attachments

A

Origin - lateral epicondyle of humerus, posteiror surface of ulna

Insertion - posterior surface of radius

92
Q

Supinator - action

A

Supination of forearm

93
Q

Supinator - innervation

A

Radial nerve (deep branch)

94
Q

Abductor pollicis longus - attachments

A

Origin - interosseous membrane and adjacent surfaces of ulna and radius

Insertion - lateral side of metacarpal I

95
Q

Abductor pollicis longus - innervation

A

Radial nerve (posterior interosseous branch)

96
Q

Abductor pollicis longus - actions

A

Abduction of thumb

97
Q

Extensor pollicis brevis - attachments

A

Origin - posterior surface of radius

Insertion - proximal phalanx of thumb

98
Q

Extensor pollicis brevis - innervation

A

Radial nerve (posterior interosseous branch)

99
Q

Extensor pollicis brevis - actions

A

Extension of MCP and CMC joints of thumb

100
Q

Extensor pollicis longus - attachments

A

Origin - posterior surface of ulna

Insertion - distal phalanx of thumb

101
Q

Extensor pollicis longus - innervation

A

Radial nerve (posterior interosseous branch)

102
Q

Extensor pollicis longus - actions

A

Extends all joints of thumb

103
Q

What are the thenar muscles?

A

Opponens pollicis

Abductor pollicis brevis

Flexor pollicis brevis

104
Q

Opponents pollicis - actions

A

Opposes the thumb by medially rotating and flexing the metacarpal on trapezium

105
Q

Opponens pollicis - innervation

A

Median nerve

106
Q

Abductor pollicis brevis - innervation

A

Median nerve

107
Q

Abductor pollicis brevis - actions

A

Abducts thumb

108
Q

Flexor pollicis brevis - innervation

A

Median nerve, deep head by ulnar nerve

109
Q

Flexor pollicis brevis - actions

A

Flexion of MCP of thumb

110
Q

What are the hypothenar muscles?

A

Opponens digiti minimi

Abductor digiti minimi

Flexor digiti minimi

111
Q

Opponens digiti minimi - innervation

A

Ulnar nerve

112
Q

Opponens digiti minimi - actions

A

Opposition of little finger by roating metacarpal of little finger towards palm

113
Q

Abductor digiti minimi - innervation

A

Ulnar nerve

114
Q

Abductor digiti minimi - actions

A

Abduction of little finger

115
Q

Flexor digiti minimi brevis - innervation

A

Ulnar nerve

116
Q

Flexor digiti minimi brevis - actions

A

Flexes the MCP joint of little finger

117
Q

Lumbricals - attachment

A

Origin - tendon of flexor digitorum profundus

Insertion - pass dorsally and laterally around each finger and insert onto extensor hood

118
Q

Lumbricals action - flexion of MCP joint and extension of IP joint of each digit

A
119
Q

Lumbricals - innervation

A

Lateral (index and middle finger) - median nerve

Medial - (ring and little finger) - ulnar nerve

120
Q

Dorsal interossei - innervation

A

Ulnar nerve

121
Q

Dorsal interossei - action

A

Abduction of fingers at MCP joint

122
Q

Palmar interossei - innervation

A

Ulnar nerve

123
Q

Palmar interossei - actions

A

Adduction of fingers at MCP joint

124
Q

Palmaris brevis - innervation

A

Ulnar nerve

125
Q

Palmaris brevis - actions

A

Wrinkles skin of hypothenar eminence to improve grip

126
Q

Adductor pollicis - innervation

A

Ulnar nerve

127
Q

Adductor pollicis - actions

A

Adductor of thumb

3A - Random Stuff for 3rd Year Exam (96 decks)

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