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OIA > UE Muscles > Flashcards

UE Muscles Flashcards

1
Q

Sternocleidomastoid Action

A

Ipsilateral Side bending of head with rotation to opposite
Bilateral- neck flexion, extension at O-A joint

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2
Q

Sternocleidomastoid Insertion

A

Mastoid Process of Temporal Bone, lateral half of superior Nuchal line

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3
Q

Sternocleidomastoid Origin

A

Sternal Head, anterior surface of manubrium of sternum. Clavicular Head; superior surface of medial 1/3 clavicle

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4
Q

Sternocleidomastoid Innervation

A

CN XI (Motor), Ventral Rami C2-C3 (Sensory)

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5
Q

Levator Scapulae Action

A

Elevates Scapula
Downward Rotation of Scapula

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6
Q

Levator Scapulae Origin

A

Transverse Process of C1-C4

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7
Q

Levator Scapula Insertion

A

Superior Aspect of Medial Border of Scapula

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8
Q

Levator Scapulae Innervation

A

Dorsal Scapular Nerve (C5), C3-C4 Ventral Rami

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9
Q

Upper Trapezius Action

A

Upwardly rotates with lower trapezius
Elevate and Retract Scapula

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10
Q

Upper Trapezius Origin

A

Medial 1/3 superior Nuchal line; Occipital Protuberance to C7, ligamentum nuchae

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11
Q

Upper Trapezius Insertion

A

Lateral 1/3 of Clavicle

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12
Q

Upper Trapezius Innervation

A

CN XI (Motor), Ventral Rami C3-C4 (Sensory)

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13
Q

Middle Trapezius Action

A

Retract Scapula

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14
Q

Middle Trapezius Origin

A

C7-T4 Spinous Process

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15
Q

Middle Trapezius Insertion

A

Acromion and Crest of Spine of Scapula

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16
Q

Middle Trapezius Innervation

A

CN XI (Motor), Ventral Rami C3-C4 (Sensory)

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17
Q

Lower Trapezius Action

A

Upwardly Rotates with upper trapezius
Depress, Retract Scapula

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18
Q

Lower Trapezius Origin

A

T4-T12 Spinous Process

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19
Q

Lower Trapezius Insertion

A

Spine of Scapula

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20
Q

Lower Trapezius Innervation

A

CN XI (Motor), Ventral Rami C3-C4 (Sensory)

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21
Q

Serratus Anterior Action

A

Protract Scapula, and holds it against thoracic wall
Upward Rotation of Scapula

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22
Q

Serratus Anterior Origin

A

Lateral Surface of Ribs 1-8

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23
Q

Serratus Anterior Insertion

A

Anterior Surface of Medial Border of Scapula

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24
Q

Serratus Anterior Innervation

A

Long Thoracic Nerve, C5, C6, C7

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25
Q

Pectoralis Major Action

A

Adduction and Internal Rotation of Humerus
Clavicular Head Alone- Flexes Humerus
Sternocostal Head Alone- Extends Humerus from overhead positions; horizontal addiction at G/H Joint

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26
Q

Pectoralis Major Origin

A

Clavicular Head- Anterior Surface of medial 1/2 of clavicle
Sternocostal Head- Anterior Surface of Sternum, upper 6 costal cartilages and aponeurosis of External Oblique

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27
Q

Pectoralis Major Insertion

A

Lateral Lip of Intertubercular Groove of Humerus

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28
Q

Pectoralis Major Innervation

A

Lateral and Medial Pectoral Nerves
Clavicular- C5-C6
Sternocostal- C7, C8-T1

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29
Q

Pectoralis Minor Action

A

Stabilizes Scapula by drawing it inferiorly and anteriorly against Thoracic Wall

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30
Q

Pectoralis Minor Origin

A

3rd to 5th Ribs near costal cartilages

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31
Q

Pectoralis Minor Insertion

A

Medial Border and Superior Surface of Coracoid Process of Scapula

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32
Q

Pectoralis Minor Innervation

A

Medial and Lateral Pectoral Nerve (C6, C7, C8)

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33
Q

Anterior Deltoid Action

A

Abduction, Flexion, internal Rotation of Humerus

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34
Q

Anterior Deltoid Origin

A

Lateral 1/3 of Clavicle (Anterior Surface)

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35
Q

Anterior Deltoid Insertion

A

Deltoid Tuberosity of Humerus

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36
Q

Anterior Deltoid Innervation

A

Axillary Nerve (C5-C6)

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37
Q

Middle Deltoid Action

A

Abduction of Humerus

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38
Q

Middle Deltoid Origin

A

Lateral Aspect of Acromion

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39
Q

Middle Deltoid Insertion

A

Deltoid Tubersoity

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40
Q

Middle Deltoid Innervation

A

Axillary Nerve (C5-C6)

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41
Q

Posterior Deltoid Action

A

Extension, External Rotation, and Abduction of Humerus

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42
Q

Posterior Deltoid Origin

A

Inferior Lip of Crest of Spine of Scapula

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43
Q

Posterior Deltoid Insertion

A

Deltoid Tuberosity

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44
Q

Posterior Deltoid Innervation

A

Axillary Nerve (C5-C6)

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45
Q

Supraspinatus Action

A

Initiates and Assists Deltoid in Abduction of Humerus; Holds head in Glenoid Cavity (Rotator Cuff)

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46
Q

Supraspinatus Origin

A

Supraspinous Fossa of Scapula

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47
Q

Supraspinatus Insertion

A

Superior facet on greater tubercle of humerus

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48
Q

Supraspinatus Innervation

A

Suprascapular Nerve (C4, C5, C6)

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49
Q

Infraspinatus Action

A

External Rotation of Humerus
Holds Humeral Head in Glenoid (Rotator Cuff)

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50
Q

Infraspinatus Origin

A

Infraspinous Fossa of Scapula

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51
Q

Infraspinatus Insertion

A

Middle Facet Greater Tubercle of Humerus

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52
Q

Infraspinatus Innervation

A

Suprascapular Nerve (C5-C6)

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53
Q

Teres Minor Action

A

External Rotation of Humerus

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54
Q

Teres Minor Origin

A

Middle Part of Lateral Border of Scapula

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55
Q

Teres Minor Insertion

A

Inferior Facet on Greater Tubercle of Humerus

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56
Q

Teres Minor Innervation

A

Axillary Nerve (C5-C6)

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57
Q

Subscapularis Action

A

Internal Rotation, Adduction of Humerus
Holds Head of Humerus in Place (Rotator Cuff)

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58
Q

Subscapularis Origin

A

Subscapular Fossa

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59
Q

Subscapularis Insertion

A

Lesser Tubercle of Humerus

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60
Q

Subscapularis Innervation

A

Upper and Lower Subscapular Nerves

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61
Q

Teres Major Action

A

Extension, Adduction, Internal Rotation of Humerus

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62
Q

Teres Major Origin

A

Dorsal Surface of Inferior Angle of Scapula

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63
Q

Teres Major Insertion

A

Medial Lip of Intertubercular Groove of Humerus

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64
Q

Teres Major Innervation

A

Lower Subscapular Nerve (C5-C6)

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65
Q

Rhomboid Major Action

A

Retract Scapula, Elevate Scapula, Downward Rotation of Scapula
Fix Scapula against Thoracic Wall

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66
Q

Rhomboid Major Origin

A

Spinous Processes of T2-T5

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67
Q

Rhomboid Major Insertion

A

Medial Border of Scapula from Spine to Inferior Angle

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68
Q

Rhomboids Major Innervation

A

Dorsal Scapular Nerve (C4-C5)

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69
Q

Rhomboid Minor Action

A

Retract Scapula, Elevate Scapula, downward rotation of scapula
Fix Scapula against Thoracic Wall

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70
Q

Rhomboid Minor Origin

A

Nuchal Ligament and Spinous Processes of C7 and T1

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71
Q

Rhomboid Minor Insertion

A

Medial Border of Scapula at level of the spine

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72
Q

Rhomboid Minor Innervation

A

Dorsal Scapular Nerve (C4 and C5)

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73
Q

Latissimus Dorsi Action

A

Extension, Adduction, Internal Rotation of Humerus

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74
Q

Latissimus Dorsi Origin

A

Thoracolumbar Fascia, Spinous Process T6-T12, inferior 3 or 4 ribs, iliac crest

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75
Q

Latissimus Dorsi Insertion

A

Floor of Intertubercular Groove of Humerus

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76
Q

Latissimus Dorsi Innervation

A

Thoracodorsal Nerve (C6, C7, C8)

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77
Q

Coracobrachialis Action

A

Flexion, Adduction of Humerus

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78
Q

Coracobrachialis Origin

A

Tip or Apex of coracoid process of Scapula

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79
Q

Coracobrachialis Insertion

A

Middle 1/3 of medial Humerus

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80
Q

Coracobrachialis Innervation

A

Musculotaneous Nerve (C5, C6)

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81
Q

Biceps Brachii Action

A

Long Head- Weak Shoulder Flexion, Weak Abduction and External Rotation of Humerus
Both- Elbow Flexion with Forearm Supination

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82
Q

Biceps Brachii Origin

A

Short Head- Coracoid Process of Scapula
Long Head- Supraglenoid Tubercle of Scapula

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83
Q

Biceps Brachii Insertion

A

Radial Tuberosity and Fascia of Forearm via Bicipital Aponeurosis

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84
Q

Biceps Brachii Innervation

A

Musculotaneous Nerve (C5-C6)

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85
Q

Brachialis Action

A

Elbow Flexion Regardless of Position

86
Q

Brachialis Origin

A

Distal Half Humerus, anterior surface

87
Q

Brachialis Insertion

A

Ulnar Tuberosity and anterior aspect coronoid process of Ulna

88
Q

Brachialis Innervation

A

Musculotaneous Nerve (C5, C6)

89
Q

Brachioradialis Action

A

Elbow Flexion (Midpronation Most Effective)

90
Q

Brachioradialis Origin

A

Proximal 2/3 of Lateral Supracondylar Ridge of Humerus

91
Q

Brachioradialis Insertion

A

Lateral Surface of Distal End of Radius

92
Q

Brachioradialis Innervation

A

Radial Nerve (C5, C6, C7)

93
Q

Triceps Action

A

All Heads- Elbow Extension
Long Head- Steadies Head of Abducted Humerus

94
Q

Triceps Origin

A

Long Head- Infraglenoid Tubercle of Scapula
Lateral Head- Posterior Surface of Humerus, Superior to Radial Groove
Medial Head- Posterior Surface of Humerus, inferior to radial groove

95
Q

Triceps Insertion

A

Proximal End of Olecranon Process of Ulna and Fascia of Forearm

96
Q

Triceps Innervation

A

Radial Nerve (C6, C7, C8)

97
Q

Pronator Teres Action

A

Pronates Forearm, Flexes Elbow

98
Q

Pronator Teres Origin

A

Humeral Head- Medial Epicondyle of Humerus
Ulnar Head- Coronoid Process of Ulna

99
Q

Pronator Teres Insertion

A

Middle of Lateral Surface of Radius

100
Q

Pronator Teres Innervation

A

Median Nerve (C6, C7)

101
Q

Pronator Quadratus Action

A

Pronates Forearm

102
Q

Pronator Quadratus Origin

A

Distal 1/4 of Anterior Surface of Ulna

103
Q

Pronator Quadratus Insertion

A

Distal 1/4 Anterior Surface of Radius

104
Q

Pronator Quadratus Innervation

A

Anterior Interosseous Nerve (From Median Nerve) (C8-T1)

105
Q

Supinator Action

A

Supinates Forearm

106
Q

Supinator Origin

A

Lateral Epicondyle of Humerus, Radial Collateral and Annular Ligaments, Supinator fossa, and crest of Ulna

107
Q

Supinator Insertion

A

Proximal Radius, Anterior, Lateral, Posterior Surfaces

108
Q

Supinator Innervation

A

Deep Branch Radial Nerve (C7, C8)

109
Q

Extensor Carpi Radialis Longus Action

A

Extension and Abduction of Hand at Wrist Joint

110
Q

Extensor Carpi Radialis Longus Origin

A

Lateral Supracondylar Ridge of Humerus

111
Q

Extensor Carpi Radialis Longus Insertion

A

Base of 2nd Metacarpal Bone

112
Q

Extensor Carpi Radialis Longus Innervation

A

Radial Nerve (C6, C7)

113
Q

Extensor Carpi Radialis Brevis Action

A

Extension and Abduction of Hand at Wrist Joint

114
Q

Extensor Carpi Radialis Brevis Origin

A

Lateral Epicondyle of Humerus

115
Q

Extensor Carpi Radialis Brevis Insertion

A

Base of 3rd Metacarpal

116
Q

Extensor Carpi Radialis Brevis Innervation

A

Deep Branch of Radial Nerve (C7, C8)

117
Q

Extensor Digitorum Action

A

Extension of Medial 4 Digits at Metacarpophalangeal (MCP) Joint, Assists with Extension at Interphalangeal (IP) Joint
Extension of Hand at Wrist Joint

118
Q

Extensor Digitorum Origin

A

Lateral Epicondyle of Humerus

119
Q

Extensor Digitorum Insertion

A

Base of Middle Phalanges of fingers of medial 4 digits via extensor expansion

120
Q

Extensor Digitorum Innervation

A

Post Interosseous Nerve (C7, C8) (Continuation of Deep Branch of Radial Nerve)

121
Q

Extensor Digiti Minimi Action

A

Extension of 5th Digit at Metacarpophalangeal (MCP) Joint and Interphalangeal (IP) Joint

122
Q

Extensor Digiti Minimi Origin

A

Lateral Epicondyle of Humerus

123
Q

Extensor Digiti Minimi Insertion

A

Extensor Expansion of 5th Digit

124
Q

Extensor Digiti Minimi Innervation

A

Post Interosseous Nerve (C7, C8) (Continuation of Deep Branch of Radial Nerve)

125
Q

Extensor Carpi Ulnaris Action

A

Extension and Adduction of Hand at Wrist

126
Q

Extensor Carpi Ulnaris Origin

A

Lateral Epicondyle of Humerus and Posterior Border of Ulna

127
Q

Extensor Carpi Ulnaris Insertion

A

Base of 5th Metacarpal

128
Q

Extensor Carpi Ulnaris Innervation

A

Post Interosseous Nerve (C7, C8) (Continuation of Deep Branch of Radial Nerve)

129
Q

Abductor Policis Longus Action

A

Abduction of Thumb and Extension of Thumb at Carpometacarpal (CMC) Joint

130
Q

Abductor Pollicis Longus Origin

A

Posterior Surface of Proximal Halves of Ulna, Radius, and Interosseous Membrane

131
Q

Abductor Pollicis Longus Insertion

A

Base of 1st Metacarpal

132
Q

Abductor Pollicis Longus Innervation

A

Posterior Interosseous Nerve (C7, C8) (Continuation of Deep Branch of Radial Nerve)

133
Q

Extensor Pollicis Brevis Action

A

Extension of Proximal Phalanx of Thumb at Metacarpophalangeal (MCP) Joint
Extension at Carpometacarpal Joint

134
Q

Extensor Pollicis Brevis Origin

A

Posterior Surface of Radius and Interosseous Membrane

135
Q

Extensor Pollicis Brevis Insertion

A

Dorsal Aspect Base of Proximal Phalanx of Thumb

136
Q

Extensor Pollicis Brevis Innervation

A

Posterior Interosseous Nerve (C7, C8) (Continuation of Deep Branch of Radial Nerve)

137
Q

Extensor Pollicis Longus Action

A

Extension of Distal Phalanx of Thumb at Interphalangeal (IP) Joint
Extension of Metacarpophalangeal (MCP) Joint and Carpometacarpal (CMC) Joint

138
Q

Extensor Pollicis Longus Origin

A

Posterior Surface of Middle 1/3 of Ulna and Interrosseous Membrane

139
Q

Extensor Pollicis Longus Insertion

A

Base of Distal Phalanx of Thumb

140
Q

Extensor Pollicis Longus Innervation

A

Posterior Interosseous Nerve (C7, C8) (Continuation of Deep Branch of Radial Nerve)

141
Q

Extensor Indicis Action

A

Extension of 2nd Digit
Assists with Wrist Extension

142
Q

Extensor Indicis Origin

A

Posterior Surface of Distal 1/3 of Ulna and Interosseous Membrane

143
Q

Extensor Indicis Insertion

A

Extensor Expansion of 2nd Digit

144
Q

Extensor Indicis Innervation

A

Posterior Interosseous Nerve (C7, C8) (Continuation of Deep Branch of Radial Nerve)

145
Q

Flexor Carpi Radialis Action

A

Flexion and Abduction of Hand at the Wrist

146
Q

Flexor Carpi Radialis Origin

A

Medial Epicondyle of Humerus

147
Q

Flexor Carpi Radialis Insertion

A

Base of 2nd and 3rd Metacarpal

148
Q

Flexor Carpi Radialis Innervation

A

Median Nerve (C6, C7)

149
Q

Flexor Carpi Ulnaris Action

A

Flexion and Adduction of Hand at Wrist

150
Q

Flexor Carpi Ulnaris Origin

A

Humeral Head- Medial Epicondyle of Humerus
Ulnar Head- Olecranon and Posterior Border of Ulna

151
Q

Flexor Carpi Ulnaris Insertion

A

Pisiform, Hook of Hamate and Base of 5th Metacarpal

152
Q

Flexor Carpi Ulnaris Innervation

A

Ulnar Nerve (C7, C8)

153
Q

Palmaris Longus Action

A

Assists with Wrist Flexion
Tense Palmar Aponeurosis

154
Q

Palmaris Longus Origin

A

Medial Epicondyle of humerus from common flexor origin

155
Q

Palmaris Longus Insertion

A

Distal 1/2 of Flexor Retinaculum and Palmar Aponeurosis

156
Q

Palmaris Longus Innervation

A

Median Nerve (C7, C8)

157
Q

Flexor Digitorum Superficialis Action

A

Flexes Proximal Interphalangeal (PIP) Joints of medial 4 digits
Flexes Metacarpophalangeal (MCP) Joint and assists in wrist flexion

158
Q

Flexor Digitorum Superficialis Origin

A

Humeroulnar Head- Medial Epicondyle of Humerus, ulnar collateral ligament, coronoid process of ulna
Radial Head- Superior 1/2 of anterior border of radius

159
Q

Flexor Digitorum Superficialis Insertion

A

Bodies of Middle Phalanges of Medial 4 digits

160
Q

Flexor Digitorum Superficialis Innervation

A

Median Nerve (C7-T1)

161
Q

Flexor Digitorum Profundus Action

A

Distal Interphalangeal (DIP) Joint Flexion of medial 4 digits. Also flexes Metacarpophalangeal (MCP) Joint and assists in wrist flexion

162
Q

Flexor Digitorum Profundus Origin

A

Proximal 3/4 of medial and anterior surface of ulna and Interosseous membrane

163
Q

Flexor Digitorum Profundus Insertion

A

Bases of Distal Phalanges of medial 4 digits

164
Q

Flexor Digitorum Profundus Innervation

A

Anterior Interosseous Nerve (From Median Nerve) C8-T1 to lateral 2 FDP
Ulnar Nerve C8-T1 to medial 2 FDP

165
Q

Flexor Pollicis Longus Action

A

Flexes Interphalangeal (IP) Joint, Metacarpophalangeal (MCP) Joint, Carpometacarpal (CMC) Joint of Thumb

166
Q

Flexor Pollicis Longus Origin

A

Anterior Surface of Radius and Interosseous membrane

167
Q

Flexor Pollicis Longus Insertion

A

Base of Distal Phalanx of Thumb

168
Q

Flexor Pollicis Longus Innervation

A

Anterior Interosseous Nerve (From Median Nerve) C8-T1

169
Q

Abductor Pollicis Brevis Action

A

Abduction of Thumb
Assists Thumb Opposition

170
Q

Abductor Pollicis Brevis Origin

A

Flexor Retinaculum and Tubercles of Scaphoid and Trapezium

171
Q

Abductor Pollicis Brevis Insertion

A

Lateral side of base of proximal phalanx of thumb and extensor expansion

172
Q

Abductor Pollicis Brevis Innervation

A

Recurrent branch of Medial Nerve (C8-T1)

173
Q

Flexor Pollicis Brevis (2 Heads) Action

A

Flexes Thumb

174
Q

Flexor Pollicis Brevis Origin

A

Flexor Retinaculum and Tubercles of Scaphoid and Trapezium

175
Q

Flexor Pollicis Brevis Insertion

A

Lateral side of base of proximal phalanx of thumb

176
Q

Flexor Pollicis Brevis Innervation

A

Superficial Head- Recurrent branch (Median Nerve) (C8,T1)
Deep Head- Deep Branch of Ulnar Nerve (C8, T1)

177
Q

Opponens Pollicis Action

A

Oppose Thumb

178
Q

Opponens Pollicis Origin

A

Flexor Retinaculum and Tubercles of Scaphoid and Trapezium

179
Q

Opponens Pollicis Insertion

A

Lateral Aspect of 1st Metacarpal

180
Q

Opponens Pollicis Innervation

A

Recurrent Branch of Median Nerve (C8, T1)

181
Q

Adductor Pollicis (2 Heads) Action

A

Adduction of Thumb

182
Q

Adductor Pollicis Origin

A

Oblique- Base of 2nd and 3rd Metacarpal, capitate and carpals
Transverse- Anterior Surface of Shaft of 3rd Metacarpal

183
Q

Adductor Pollicis Insertion

A

Medial Side of Base of Proximal Phalanx of Thumb

184
Q

Adductor Pollicis Innervation

A

Deep Branch of Ulnar Nerve (C8, T1)

185
Q

Abductor Digiti Minimi Action

A

Abducts 5th Digit
Assists Flexion of 5th Proximal Phalanx

186
Q

Abductor Digiti Minimi Origin

187
Q

Abductor Digiti Minimi Insertion

A

Medial Side Base of Proximal Phalanx of 5th Digit

188
Q

Abductor Digiti Minimi Innervation

A

Deep Branch Ulnar Nerve (C8, T1)

189
Q

Flexor Digiti Minimi Brevis Action

A

Flexes Proximal Phalanx of 5th Digit

190
Q

Flexor Digiti Minimi Brevis Origin

A

Hook of Hamate and Flexor Retinaculum

191
Q

Flexor Digiti Minimi Brevis Insertion

A

Medial Side base of proximal phalanx of 5th digit

192
Q

Flexor Digiti Minimi Brevis Innervation

A

Deep Branch of Ulnar Nerve (C8, T1)

193
Q

Opponens Digiti Minimi Action

A

Draws 5th Metacarpal Anteriorly to oppose the thumb

194
Q

Opponens Digiti Minimi Origin

A

Hook of Hamate and Flexor Retinaculum

195
Q

Opponens Digiti Minimi Insertion

A

Medial Border of 5th Metacarpal

196
Q

Opponens Digiti Minimi Innervation

A

Deep Branch of Ulnar Nerve (C8, T1)

197
Q

Lumbricals 1 and 2 Action

A

Flex Metacarpal Joints and extend Interphalangeal Joints

198
Q

Lumbricals 1 and 2 Origin

A

Lateral 2 tendons of Flexor Digitorum Profundus

199
Q

Lumbricals 1 and 2 Insertion

A

Lateral Sides of Extensor Expansion of Digits 2-5

200
Q

Lumbricals 1 and 2 Innervation

A

Median Nerve (C8, T1)

201
Q

Lumbricals 3 and 4 Action

A

Flex metacarpal Joints and Extend Interphalangeal Joints

202
Q

Lumbricals 3 and 4 Origin

A

Bipennate from medial 3 tendons flexor Digitorum Profundus

203
Q

Lumbricals 3 and 4 Insertion

A

Lateral Sides of Extensor Expansion of Digits 2-5

204
Q

Lumbricals 3 and 4 Innervation

A

Deep Branch of Ulnar Nerve (C8, T1)

205
Q

Palmar Interossei Action

A

Adductor 2nd, 4th, and 5th digit towards midline, assists with metacarpal flexion, and Interphalangeal extension

206
Q

Palmar Interossei Origin

A

Palmar Surfaces of 2nd, 4th, and 5th Metacarpal

207
Q

Palmar Interossei Insertion

A

Base of Proximal Phalanges and Extension Expansion of 2nd, 4th, and 5th digits

208
Q

Palmar Interossei Innervation

A

Deep Branch of Ulnar Nerve (C8, T1)

209
Q

Dorsal Interossei Action

A

Abduct Digits 2-4 away from midline, assist with MCP Flexion, IP Extension

210
Q

Dorsal Interossei Origin

A

Bipennate adjacent sides of Metacarpals

211
Q

Dorsal Interossei Insertion

A

Base of Proximal Phalanges and Extension expansions of 2nd, 4th, and 5th Digits

212
Q

Dorsal Interossei Innervation

A

Deep Branch of Ulnar Nerve (C8, T1)

OIA (3 decks)

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