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PHTH 510: Anatomy > Upper Extremity Muscle OIIA's > Flashcards

Upper Extremity Muscle OIIA's Flashcards

1
Q

Origin: Flexor carpi ulnaris

A

medial epicondyle & olecranon

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2
Q

Insertion: Flexor carpi ulnaris

A

pisiform, hamate, & 5th metacarpal

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3
Q

Innervation: Flexor carpi ulnaris

A

ulnar nerve (C7, C8)

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4
Q

Action: Flexor carpi ulnaris

A

flexes and adducts the wrist (ulnar deviation)

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5
Q

Origin: Palmaris longus

A

medial epicondyle

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6
Q

Insertion: Palmaris longus

A

Palmar aponeurosis and flexor retinaculum

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7
Q

Innervation: Palmaris longus

A

Median nerve (C7, C8)

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8
Q

Action: Palmaris longus

A

flexes wrist & tenses plantar aponeurosis

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9
Q

Origin: Flexor carpi radialis

A

medial epicondyle

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10
Q

Insertion: Flexor carpi radialis

A

base of metacarpals II & III

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11
Q

Innervation: Flexor carpi radialis

A

Median nerve (C6, C7)

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12
Q

Action: Flexor carpi radialis

A

flexes and abducts (radial deviation) the wrist

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13
Q

Origin: Pronator teres

A

medial epicondyle & coronoid process

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14
Q

Insertion: Pronator teres

A

lateral surface of the mid-shaft of the radius

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15
Q

Innervation: Pronator teres

A

Median nerve (C6, C7)

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16
Q

Action: Pronator teres

A

Pronation

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17
Q

Origin: Flexor digitorum superficialis

A

medial epicondyle, margin coronoid process, and oblique line of radius

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18
Q

Insertion: Flexor digitorum superficialis

A

middle phalanges of digits 2-5

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19
Q

Innervation: Flexor digitorum superficialis

A

Median nerve (C7, T1)

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20
Q

Action: Flexor digitorum superficialis

A

flexes wrist and flexes middle and proximal phalanges of digits 2-5

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21
Q

Origin: Flexor digitorum profundus

A

anterior & medial surface of the ulna & interosseous membrane

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22
Q

Insertion: Flexor digitorum profundus

A

Distal phalanges of digits 2-5

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23
Q

Innervation: Flexor digitorum profundus

A

Interosseous branch of the median and ulnar nerves (C8, T1)

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24
Q

Action: Flexor digitorum profundus

A

flexes distal interphalangeal joints

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25
Q

Origin: Flexor pollicis longus

A

anterior surface of radius & interosseous membrane

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26
Q

Insertion: Flexor pollicis longus

A

base of distal phalanx of thumb

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27
Q

Innervation: Flexor pollicis longus

A

Median nerve (C7, C8)

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28
Q

Action: Flexor pollicis longus

A

flexes distal phalanx of the thumb

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29
Q

Origin: Pronator quadratus

A

Distal fourth of anterior surface of the ulna

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30
Q

Insertion: Pronator quadratus

A

distal fourth of anterior surface of the radius

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31
Q

Innervation: Pronator quadratus

A

median nerve (C7, C8)

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32
Q

Action: Pronator quadratus

A

pronation

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33
Q

Origin: Brachioradialis

A

lateral supraepicondylar ridge

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34
Q

Insertion: Brachioradialis

A

lateral side of the base of the styloid process of the radius

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35
Q

Innervation: Brachioradialis

A

radial nerve (C5, C6)

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36
Q

Action: Brachioradialis

A

flexes the forearm at the elbow

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37
Q

Origin: Extensor carpi radialis longus

A

lateral supraepicondylar ridge

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38
Q

Insertion: Extensor carpi radialis longus

A

base of metacarpal II

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39
Q

Innervation: Extensor carpi radialis longus

A

radial nerve (C6, C7)

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40
Q

Action: Extensor carpi radialis longus

A

extends & abducts the wrist

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41
Q

Origin: Extensor carpi radialis brevis

A

lateral epicondyle

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42
Q

Insertion: Extensor carpi radialis brevis

A

base of metacarpal III

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43
Q

Innervation: Extensor carpi radialis brevis

A

deep branch of radial nerve (C7, C8)

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44
Q

Action: Extensor carpi radialis brevis

A

extends and adducts the wrist

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45
Q

Origin: Extensor digitorum

A

lateral epicondyle

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46
Q

Insertion: Extensor digitorum

A

base of middle phalanges of digits 2-5

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47
Q

Innervation: Extensor digitorum

A

Posterior interosseous nerve (C7, C8)

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48
Q

Action: Extensor digitorum

A

extends digits 2-5

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49
Q

Origin: Extensor digiti minimi

A

lateral epicondyle

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50
Q

Insertion: Extensor digiti minimi

A

dorsal digital expansion on the proximal phalanx of the little finger

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51
Q

Innervation: Extensor digiti minimi

A

posterior interosseous nerve (C7, C8)

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52
Q

Action: Extensor digiti minimi

A

extends the little finger

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53
Q

Origin: Extensor carpi ulnaris

A

lateral epicondyle & posterior border of ulna

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54
Q

Insertion: Extensor carpi ulnaris

A

tubercle on the base of the medial side of metacarpal V

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55
Q

Innervation: Extensor carpi ulnaris

A

posterior interosseous (C7, C8)

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56
Q

Action: Extensor carpi ulnaris

A

extends & adducts the wrist

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57
Q

Origin: Anconeus

A

lateral epicondyle

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58
Q

Insertion: Anconeus

A

Olecranon process & proximal posterior surface of ulna

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59
Q

Innervation: Anconeus

A

radial nerve (C7, C8)

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60
Q

Action: Anconeus

A

-Abduction of the ulna in pronation (it keeps the center of the palm over the same point when the hand is flipped)
-Accessory extensor of the elbow

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61
Q

Origin: Supinator

A

-Superficial: lateral epicondyle
-Deep: superior crest of ulna

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62
Q

Insertion: Supinator

A

lateral surface of radius superior to the anterior oblique line

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63
Q

Innervation: Supinator

A

posterior interosseous (C6, C7)

64
Q

Action: Supinator

A

supination

65
Q

Origin: Abductor pollicis longus

A

posterior surface of ulna & radius, and interosseous membrane

66
Q

Insertion: Abductor pollicis longus

A

lateral side of base of metacarpal I

67
Q

Innervation: Abductor pollicis longus

A

posterior interosseous (C7, C8)

68
Q

Action: Abductor pollicis longus

A

abducts carpometacarpal joint of thumb

69
Q

Origin: Extensor pollicis brevis

A

posterior surface of radius & interosseous membrane

70
Q

Insertion: Extensor pollicis brevis

A

dorsal surface of base of proximal phalanx of the thumb

71
Q

Innervation: Extensor pollicis brevis

A

posterior interosseous (C7, C8)

72
Q

Action: Extensor pollicis brevis

A

Extension of thumb, adduction of the wrist

73
Q

Origin: Extensor pollicis longus

A

posterior surface of ulna & interosseous membrane

74
Q

Insertion: Extensor pollicis longus

A

dorsal surface of base of the distal phalanx of the thumb

75
Q

Innervation: Extensor pollicis longus

A

posterior interosseous (C7, C8)

76
Q

Action: Extensor pollicis longus

A

extension of thumb, abduction of wrist

77
Q

Origin: Extensor indicis

A

posterior surface of ulna & interosseous membrane

78
Q

Insertion: Extensor indicis

A

extensor hood of index finger

79
Q

Innervation: Extensor indicis

A

posterior interosseous (C7, C8)

80
Q

Action: Extensor indicis

A

Extension of the wrist and joints of digit II

81
Q

Origin: Trapezius

A

-Superior nuchal line
-Occipital protuberance
-Spinous processes of C7-T12

82
Q

Insertion: Trapezius

A

-Clavicle
-Acromion
-Spine of scapula

83
Q

Innervation: Trapezius

A

Accessory nerve (CN11)

84
Q

Action: Trapezius

A

-Upper: elevates scapula
-Middle: retracts scapula
-Lower: depresses scapula

85
Q

Origin: Deltoid

A

-Inferior spine of scapula
-Lateral margins of acromion
-Anterior border of lateral clavicle

86
Q

Insertion: Deltoid

A

Deltoid tuberosity of humerus

87
Q

Innervation: Deltoid

A

Axillary nerve (C5, C6)

88
Q

Action: Deltoid

A

-Anterior: flexes and medially rotates arm
-Middle: abducts arm
-Posterior: extends and laterally rotates arm

89
Q

Origin: Levator scapulae

A

Transverse processes of C1-C4 vertebrae

90
Q

Insertion: Levator scapulae

A

Superior angle of scapula

91
Q

Innervation: Levator scapulae

A

Dorsal scapular (C5) and cervical C3 & C4 nerves

92
Q

Action: Levator scapulae

A

Elevates scapula and tilts the glenoid cavity inferiorly by rotating the scapula

93
Q

Origin: Rhomboid major

A

Spinous processes of T2-T5

94
Q

Insertion: Rhomboid major

A

Medial border of scapula below scapular spine

95
Q

Innervation: Rhomboid major

A

Dorsal scapular nerve (C4, C5)

96
Q

Action: Rhomboid major

A

Retract scapula and rotate it to depress glenoid cavity, fix scapula to thoracic wall

97
Q

Origin: Rhomboid minor

A

Spinous processes of C7 and T1

98
Q

Insertion: Rhomboid minor

A

Medial border of scapula above scapular spine

99
Q

Innervation: Rhomboid minor

A

Dorsal scapular nerve (C4, C5)

100
Q

Action: Rhomboid minor

A

Retract scapula and rotate it to depress glenoid cavity, fix scapula to thoracic wall

101
Q

Origin: Supraspinatus

A

Supraspinatus fossa of scapula

102
Q

Insertion: Supraspinatus

A

Greater tubercle of humerus

103
Q

Innervation: Supraspinatus

A

Suprascapular nerve (C5, C6)

104
Q

Action: Supraspinatus

A

Initiates arm abduction

105
Q

Origin: Infraspinatus

A

Infraspinatus fossa of scapula

106
Q

Insertion: Infraspinatus

A

Greater tubercle of humerus

107
Q

Innervation: Infraspinatus

A

Suprascapular nerve (C5, C6)

108
Q

Action: Infraspinatus

A

Externally rotates arm

109
Q

Origin: Teres minor

A

Lateral border of scapula

110
Q

Insertion: Teres minor

A

Greater tubercle of humerus

111
Q

Innervation: Teres minor

A

Axillary nerve (C5, C6)

112
Q

Action: Teres minor

A

Externally rotates arm

113
Q

Origin: Teres major

A

Inferior angle of scapula

114
Q

Insertion: Teres major

A

Intertubercular groove of humerus

115
Q

Innervation: Teres major

A

Lower subscapular nerve (C5, C6)

116
Q

Action: Teres major

A

-Extension
-Adduction
-Internal rotation

117
Q

Origin: Pectoralis major

A

-Clavicular head: anterior surface of clavicle
-Sternocostal head: anterior surface of sternum, first 7 costal cartilages

118
Q

Insertion: Pectoralis major

A

Lateral lip of intertubercular sulcus of humerus

119
Q

Innervation: Pectoralis major

A

-Clavicular head: medial and lateral pectoral nerves (C5, C6)
-Sternocostal head: C7 to T1 spinal nerves

120
Q

Action: Pectoralis major

A

-Flexion of arm
-Adduction of arm
-Internal rotation of arm

121
Q

Origin: Subclavius

A

First rib and its costal cartilage

122
Q

Insertion: Subclavius

A

Middle one-third of clavicle

123
Q

Innervation: Subclavius

A

Nerve to subclavius (C5, C6)

124
Q

Action: Subclavius

A

Depresses clavicle down and forward

125
Q

Origin: Pectoralis minor

A

Ribs 3-5

126
Q

Insertion: Pectoralis minor

A

Coracoid process of scapula

127
Q

Innervation: Pectoralis minor

A

Medial pectoral nerve (C8-T1)

128
Q

Action: Pectoralis minor

A

Elevates the ribs and draws the scapula down and medially

129
Q

Origin: Serratus anterior

A

Ribs 1-9

130
Q

Insertion: Serratus anterior

A

Costal surface of medial border of scapula

131
Q

Innervation: Serratus anterior

A

Long thoracic nerve (C5-C7)

132
Q

Action: Serratus anterior

A

-Protraction and rotation of the scapula
-Keeps scapula pressed against the thoracic cage

133
Q

Origin: Subscapularis

A

Subscapular fossa

134
Q

Insertion: Subscapularis

A

Lesser tubercle of humerus

135
Q

Innervation: Subscapularis

A

Upper and lower subscapular nerves (C5 & C6)

136
Q

Action: Subscapularis

A

Internally rotates and adducts arm

137
Q

Origin: Latissimus dorsi

A

-Spinous processes of T7-L1
-Thoracolumbar fascia
-Iliac crest
-Inferior 3-4 ribs

138
Q

Insertion: Latissimus dorsi

A

-Intertubercular groove of humerus
-Inferior angle of the scapula

139
Q

Innervation: Latissimus dorsi

A

Thoracodorsal nerve (C6-C8)

140
Q

Action: Latissimus dorsi

A

Adducts, extends, and internally rotates arm

141
Q

Origin: Coracobrachialis

A

Coracoid process

142
Q

Insertion: Coracobrachialis

A

Mid-shaft of humerus on antero-medial surface

143
Q

Innervation: Coracobrachialis

A

Musculocutaneous nerve (C5-C7)

144
Q

Action: Coracobrachialis

A

Adduction and flexion of arm

145
Q

Origin: Brachialis

A

Anterior distal half of the humerus

146
Q

Insertion: Brachialis

A

Tuberosity of ulna

147
Q

Innervation: Brachialis

A

Musculocutaneous nerve (C5, C6)

148
Q

Action: Brachialis

A

Flexion of forearm

149
Q

Origin: Biceps brachii

A

-Long head: supraglenoid tubercle of scapula
-Short head: coracoid process

150
Q

Insertion: Biceps brachii

A

Radial tuberosity

151
Q

Innervation: Biceps brachii

A

Musculocutaneous nerve (C5, C6)

152
Q

Action: Biceps brachii

A

Flexion and supination of forearm

153
Q

Origin: Triceps brachii

A

-Long head: infraglenoid tubercle
-Lateral head: posterior surface of humerus
-Medial head: posterior surface of humerus

154
Q

Insertion: Triceps brachii

A

Olecranon

155
Q

Innervation: Triceps brachii

A

Radial nerve (C6-C8)

156
Q

Action: Triceps brachii

A

-Extension of forearm
-Long head can also extend & adduct the arm

PHTH 510: Anatomy (5 decks)

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