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Muscles of the Upper Limb Flashcards

Information used from Netter's Atlas of Human Anatomy

1
Q

What are the main actions of the Abductor digiti minimi muscle?

A

Abducts little finger

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2
Q

What are the main actions of the Abductor pollicis brevis muscle?

A

Abducts thumb

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3
Q

What are the main actions of the Abductor pollicis longus muscle?

A

Abducts and extends thumb at carpometacarpal joint

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4
Q

What are the main actions of the Adductor pollicis muscle?

A

Adducts thumb

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5
Q

What are the main actions of the Anconeus muscle?

A

Assists triceps brachii in extending elbow, abducts ulna in pronation

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6
Q

What are the main actions of the Biceps Brachii muscle?

A

Flexes and supinates forearm at elbow

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7
Q

What are the main actions of the Brachialis muscle?

A

Flexes forearm at elbow

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8
Q

What are the main actions of the Brachioradialis muscle?

A

Weak flexion of forearm when forearm is midpronated

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9
Q

What are the main actions of the Coracobrachialis muscle?

A

Flexes and adducts arm at shoulde

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10
Q

What are the main actions of the Deltoid muscle?

A

Clavicular part: flexes and medially rotates arm Acromial part: abducts arm beyond initial 15 degrees done by supraspinatus Spinous part: extends and laterally rotates arm

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11
Q

What are the main actions of the Dorsal interosseous muscles?

A

Abduct digits; flex digits at metacarpophalangeal joint and extend interphalangeal joints

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12
Q

What are the main actions of the Extensor Carpi Radialis brevis muscle?

A

Extends and abducts hand at wrist

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13
Q

What are the main actions of the Extensor Carpi Radialis Longus muscle?

A

Extends and abducts hand at wrist

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14
Q

What are the main actions of the Extensor Carpi Ulnaris muscle?

A

Extends and adducts hand at wrist

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15
Q

What are the main actions of the Extensor digiti minimi muscle?

A

Extends 5th digit

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16
Q

What are the main actions of the Extensor digitorum muscle?

A

Extends medial four digits, assists in wrist extension

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17
Q

What are the main actions of the Extensor indicis muscle?

A

Extends 2nd digit and helps extend hand at wrist

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18
Q

What are the main actions of the Extensor pollicis brevis muscle?

A

Extends proximal phalanx of thumb at carpometacarpal joint

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19
Q

What are the main actions of the Extensor pollicis longus muscle?

A

Extends distal phalanx of thumb at interphalangeal and metacarpophalangeal joints

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20
Q

What are the main actions of the Flexor Carpi Radialis muscle?

A

Flexes and abducts hand at wrist

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21
Q

What are the main actions of the Flexor Carpi Ulnaris muscle?

A

Flexes and adducts hand at wrist

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22
Q

What are the main actions of the Flexor digiti minimi brevis muscle?

A

Flexes proximal phalanx of little finger

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23
Q

What are the main actions of the Flexor digitorum profundus muscle?

A

Flexes distal phalangeal bones of medial four digits, assists with flexion of hand at wrist

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24
Q

What are the main actions of the Flexor digitorum superficialis muscle?

A

Flexes middle and proximal phalangeal bones of medial four digits, flexes hand at wrist

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25
Q

What are the main actions of the Flexor pollicis brevis muscle?

A

Flexes proximal phalanx of thumb

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26
Q

What are the main actions of the Flexor pollicis longus muscle?

A

Flexes phalangeal bones of thumb

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27
Q

What are the main actions of the Infraspinatus muscle?

A

Lateral rotation of arm

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28
Q

What are the main actions of the Latissimus dorsi muscle?

A

Extends, adducts, and medially rotates humerus

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29
Q

What are the main actions of the Levator scapulae muscle?

A

Elevates scapula medially, inferiorly rotates glenoid fossa

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30
Q

What are the main actions of the Lumbricals (1st and 2nd) muscles?

A

Extend digits at interphalangeal joints, flex metacarpophalangeal joints

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31
Q

What are the main actions of the Lumbricals (3rd and 4th) muscles?

A

Extend digits at interphalangeal joints, flex metacarpophalangeal joints

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32
Q

What are the main actions of the Opponens digiti minimi muscle?

A

Draws 5th metacarpal anteriorly and rotates it to face thumb

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33
Q

What are the main actions of the Opponens pollicis muscle?

A

Draws 1st metacarpal forward and rotates it medially

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34
Q

What are the main actions of the Palmar brevis muscle?

A

Deepens hollow of hand, assists grip

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35
Q

What are the main actions of the Palmar interosseous muscle?

A

Adducts digits; flexes digits and extends interphalangeal joints

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36
Q

What are the main actions of the Palmar longus muscle?

A

Flexes hand at wrist and tenses palmar aponeurosis

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37
Q

What are the main actions of the Pectoralis major muscle?

A

Flexes, adducts, and medially rotates arm

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38
Q

What are the main actions of the Pectoralis minor muscle?

A

Lowers lateral angle of scapula and protracts scapula

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39
Q

What are the main actions of the Pronator Quadratus muscle?

A

Pronates forearm

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40
Q

What are the main actions of the Pronator Teres muscle?

A

Pronates forearm and weakly flexes elbow

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41
Q

What are the main actions of the Rhomboid major muscle?

A

Fixes scapula to thoracic wall and retracts and rotates it to depress glenoid cavity

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42
Q

What are the main actions of the Rhomboid minor muscle?

A

Fixes scapula to thoracic wall and retracts and rotates it to depress glenoid cavity

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43
Q

What are the main actions of the Serratus anterior muscle?

A

Protracts and rotates scapula and holds it against thoracic wall

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44
Q

What are the main actions of the Subclavius muscle?

A

Anchors and depresses clavicle

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45
Q

What are the main actions of the Subscapularis muscle?

A

Medially rotates and adducts arm; helps hold humeral head in glenoid fossa

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46
Q

What are the main actions of the Supinator muscle?

A

Supinates forearm

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47
Q

What are the main actions of the Supraspinatus muscle?

A

Initiates arm abduction

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48
Q

What are the main actions of the Teres major muscle?

A

Adducts and medially rotates arm

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49
Q

What are the main actions of the Teres minor muscle?

A

Laterally rotates arm

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50
Q

What are the main actions of the Trapezius muscle?

A

Elevates, retracts, and rotates scapula; lower fibers depress scapula

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51
Q

What are the main actions of the Triceps brachii muscle?

A

Extends forearm at elbow; long head stabilizes head of abducted humerus and extends and adducts arm

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52
Q

What arteries supply the Abductor digit minimi muscle?

A

Deep palmar branch of ulnar artery

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53
Q

What arteries supply the Abductor pollicis brevis muscle?

A

Superficial palmar branch of radial artery

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54
Q

What arteries supply the Abductor pollicis longus muscle?

A

Posterior interosseous artery

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55
Q

What arteries supply the Adductor pollicis muscle?

A

Deep palmar arch

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56
Q

What arteries supply the Anconeus muscle?

A

Deep brachial artery

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57
Q

What arteries supply the Biceps Brachii muscle?

A

Muscular branches of brachial artery

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58
Q

What arteries supply the Brachialis muscle?

A

Radial recurrent artery, muscular branches of brachial artery

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59
Q

What arteries supply the Brachioradialis muscle?

A

Radial recurrent artery

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60
Q

What arteries supply the Coracobrachialis muscle?

A

Muscular branches of brachial artery

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61
Q

What arteries supply the Deltoid muscle?

A

Posterior circumflex humeral artery, deltoid branch of thoracoacromial artery

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62
Q

What arteries supply the Dorsal interosseous muscle?

A

Deep palmar arch

63
Q

What arteries supply the Extensor Carpi Radialis brevis muscle?

A

Radial artery, radial recurrent artery

64
Q

What arteries supply the Extensor Carpi Radialis longus muscle?

A

Radial artery, Radial recurrent artery

65
Q

What arteries supply the Extensor carpi ulnaris muscle?

A

Posterior interosseous artery

66
Q

What arteries supply the Extensor digiti minimi muscle?

A

Posterior interosseous artery

67
Q

What arteries supply the Extensor digitorum muscle?

A

Posterior interosseous artery

68
Q

What arteries supply the Extensor indicis muscle?

A

Posterior interosseous artery

69
Q

What arteries supply the Extensor pollicis brevis muscle?

A

Posterior interosseous artery

70
Q

What arteries supply the Extensor pollicis longus muscle?

A

Posterior interosseous artery

71
Q

What arteries supply the Flexor Carpi Radialis muscle?

A

Radial artery

72
Q

What arteries supply the Flexor Carpi Ulnaris muscle?

A

Posterior ulnar recurrent artery

73
Q

What arteries supply the Flexor digiti minimi brevis muscle?

A

Deep palmar branch of ulnar artery

74
Q

What arteries supply the Flexor digitorum profundus muscle?

A

Anterior interosseous artery, muscular branches of ulnar artery

75
Q

What arteries supply the Flexor digitorum superficialis muscle?

A

Ulnar and radial arteries

76
Q

What arteries supply the Flexor pollicis brevis muscle?

A

Superficial palmar branch of radial artery

77
Q

What arteries supply the Flexor pollicis longus muscle?

A

Anterior interosseous artery

78
Q

What arteries supply the Infraspinatus muscle?

A

Suprascapular artery

79
Q

What arteries supply the Latissimus dorsi muscle?

A

Thoracodorsal artery, dorsal perforating branches of 9th, 10th, and 11th posterior intercostal, subcostal, and first three lumbar arteries

80
Q

What arteries supply the Levator Scapulae muscle?

A

Dorsal scapular artery, transverse cervical artery, ascending cervical artery

81
Q

What arteries supply the Lumbricals (1st and 2nd) muscle?

A

Superficial and deep palmar arches

82
Q

What arteries supply the Lumbricals (3rd and 4th) muscle?

A

Superficial and deep palmar arches

83
Q

What arteries supply the Opponens digiti minimi muscle?

A

Deep palmar branch of ulnar artery

84
Q

What arteries supply the Opponens pollicis muscle?

A

Superficial palmar branch of radial artery

85
Q

What arteries supply the Palmar brevis muscle?

A

Superficial palmar arch

86
Q

What arteries supply the Palmar interosseous muscle?

A

Deep palmar arch

87
Q

What arteries supply the Palmar longus?

A

Posterior ulnar recurrent artery

88
Q

What arteries supply the Pectoralis major muscle?

A

Pectoral branch of thoracoacromial artery, perforating branches of internal thoracic artery

89
Q

What arteries supply the Pectoralis minor muscle?

A

Pectoral branch of thoracoacromial artery, and superior and lateral thoracic arteries

90
Q

What arteries supply the Pronator Quadratus muscle?

A

Anterior interosseous artery

91
Q

What arteries supply the Pronator teres muscle?

A

Anterior ulnar recurrent artery

92
Q

What arteries supply the Rhomboid major muscle?

A

Dorsal scapular OR deep branch of transverse cervical artery, dorsal perforating branches of upper five or six posterior intercostal arteries

93
Q

What arteries supply the Rhomboid minor muscle?

A

Dorsal scapular artery OR deep branch of transverse cervical artery, dorsal perforating branches of upper five or six posterior intercostal arteries

94
Q

What arteries supply the Serratus anterior muscle?

A

Lateral thoracic artery

95
Q

What arteries supply the Subclavius muscle?

A

Clavicular branch of thoracoacromial artery

96
Q

What arteries supply the Subscapularis muscle?

A

Subscapular artery, lateral thoracic artery

97
Q

What arteries supply the Supinator muscle?

A

Radial recurrent artery, posterior interosseous arteries

98
Q

What arteries supply the Supraspinatus muscle?

A

Suprascapular artery

99
Q

What arteries supply the Teres Major muscle?

A

Circumflex scapular artery

100
Q

What arteries supply the Teres Minor muscle?

A

Circumflex scapular artery

101
Q

What arteries supply the Trapezius muscle?

A

Transverse cervical artery, dorsal perforating branches of posterior intercostal arteries

102
Q

What arteries supply the Triceps brachii muscle?

A

Branch of profunda brachii artery

103
Q

What nerve innervates 1st and 2nd Lumbricals?

A

Median nerve (digital branches)

104
Q

What nerve innervates 3rd and 4th Lumbricals?

A

Ulnar Nerve (deep branch)

105
Q

What nerve innervates Abductor digiti minimi?

A

Ulnar nerve (deep branch)

106
Q

What nerve innervates Abductor pollicis brevis?

A

Median nerve (recurrent branch)

107
Q

What nerve innervates Abductor pollicis longus?

A

Radial nerve (posterior interosseous)

108
Q

What nerve innervates Adductor pollcicis?

A

Ulnar nerve (deep branch)

109
Q

What nerve innervates Anconeus?

A

Radial Nerve

110
Q

What nerve innervates Biceps brachii?

A

Musculocutaneous nerve

111
Q

What nerve innervates Brachialis?

A

Musculocutaneous nerve and Radial nerve

112
Q

What nerve innervates Brachioradialis?

A

Radial Nerve

113
Q

What nerve innervates Coracobrachialis?

A

Musculocutaneous nerve

114
Q

What nerve innervates Deltoid?

A

Axillary Nerve

115
Q

What nerve innervates Dorsal interosseous muscles?

A

Ulnar nerve (deep branch)

116
Q

What nerve innervates Extenser policis brevis?

A

Radial nerve (posterior interosseous nerve)

117
Q

What nerve innervates Extenser policis longus?

A

Radial nerve (posterior interosseous nerve)

118
Q

What nerve innervates Extensor Carpi Radialis Brevis?

A

Radial nerve (deep branch)

119
Q

What nerve innervates Extensor carpi radialis longus?

A

Radial nerve

120
Q

What nerve innervates Extensor carpi ulnaris?

A

Radial nerve (posterior interosseous nerve)

121
Q

What nerve innervates Extensor digit minimi?

A

Radial nerve (posterior interosseous nerve)

122
Q

What nerve innervates Extensor digitorum?

A

Radial nerve (posterior interosseous nerve)

123
Q

What nerve innervates Extensor indicis?

A

Radial nerve (posterior interosseous nerve)

124
Q

What nerve innervates Flexor carpi radialis?

A

Median nerve

125
Q

What nerve innervates Flexor carpi ulnaris?

A

Ulnar nerve

126
Q

What nerve innervates Flexor digiti minimi brevis?

A

Ulnar nerve (deep branch)

127
Q

What nerve innervates Flexor digitorum profundus?

A

Medial: Ulnar nerve Lateral: Median nerve

128
Q

What nerve innervates Flexor digitorum superficialis?

A

Median Nerve

129
Q

What nerve innervates Flexor pollicis brevis?

A

Median nerve (recurrent branch)

130
Q

What nerve innervates Flexor pollicis longus?

A

Median nerve (anterior interosseous nerve)

131
Q

What nerve innervates Infraspinatus?

A

Suprascapular nerve

132
Q

What nerve innervates Latissimus dorsi?

A

Thoracodorsal nerve

133
Q

What nerve innervates Levator scapulae?

A

Anterior Rami of C3-C4 and dorsal scapular nerve

134
Q

What nerve innervates Opponens digit minimi?

A

Ulnar nerve (deep branch)

135
Q

What nerve innervates Opponens pollicis?

A

Median Nerve (recurrent branch)

136
Q

What nerve innervates Palmar interosseous muscles?

A

Ulnar nerve (deep branch)

137
Q

What nerve innervates Palmaris brevis?

A

Superficial branch of ulnar nerve

138
Q

What nerve innervates Palmaris Longus?

A

Median Nerve

139
Q

What nerve innervates Pectoralis major?

A

Medial and lateral pectoral nerves

140
Q

What nerve innervates Pectoralis minor?

A

Medial pectoral nerve

141
Q

What nerve innervates Pronator Quadratus?

A

Median Nerve (anterior interosseous nerve)

142
Q

What nerve innervates Pronator Teres?

A

Median nerve

143
Q

What nerve innervates Rhomboid major?

A

Dorsal scapular nerve

144
Q

What nerve innervates Rhomboid minor?

A

Dorsal scapular nerve

145
Q

What nerve innervates Seratus anterior?

A

Long thoracic nerve

146
Q

What nerve innervates Subclavius?

A

Nerve to subclavius

147
Q

What nerve innervates Subscapularis?

A

Upper and Lower Subscapularis nerves

148
Q

What nerve innervates Supinator?

A

Radial nerve (deep branch)

149
Q

What nerve innervates Supraspinatous?

A

Suprascapular nerve

150
Q

What nerve innervates Teres Major?

A

Lower Subscapular nerve

151
Q

What nerve innervates Teres Minor?

A

Axillary nerve

152
Q

What nerve innervates the Triceps brachii?

A

Radial Nerve

153
Q

What nerve innervates Trapezius?

A

Accessory nerve (cranial nerve XI)

MSK Exams (13 decks)

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