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UE Anatomy OIAN > Unit 1 > Flashcards

Unit 1 Flashcards

1
Q

Sternocleidomastoid Action

A

Ipsilateral side bending of head with rotation to opposite side, bilateral neck flexion, posterior fibers assist with bilateral extension at O-A joint

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2
Q

Sternocleidomastoid Origin

A

Mastoid process of temporal bone; lateral half of superior nuchal line

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3
Q

Sternocleidomastoid insertion

A

Sternal head: Anterior surface
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

Posterior tubercle of transverse processes, CV1-CV4

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7
Q

Levator scapulae insertion

A

Superior aspect of medial border of scapula

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8
Q

Levator scapulae innervation

A

Dorsal Scapular nerve C4,C5; C3-C4 ventral rami

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9
Q

Upper trapezius action

A

Upwardly rotate with lower trapezius, elevate working alone & retract scapula

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10
Q

Upper trapezius origin

A

Medial 1/3 superior nuchal line; Occipital protuberance to CV7, ligamentum nuchae

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11
Q

Upper trapezius insertion

A

Lateral 1/3 clavicle

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12
Q

Upper trapezius innervation

A

CN XI (motor); Ventral rami C3-4 (sensory)

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13
Q

Middle trapezius action

A

Retract scapula

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14
Q

Middle trapezius origin

A

CV7 to TV4 spinous process

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15
Q

Middle trapezius insertion

A

Acromion & crest of spine of scapula

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16
Q

Middle trapezius innervation

A

CN XI (motor); Ventral rami C3-4 (sensory)

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17
Q

Lower trapezius action

A

Upwardly rotate with upper trapezius, depress working alone; retract scapula

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18
Q

Lower trapezius origin

A

TV4 to TV12 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 C3-4 (sensory)

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21
Q

Serratus anterior action

A

Protract scapula & holds it against thoracic wall; upward rotation of scapula

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22
Q

Serratus anterior origin

A

External 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 humerus
Clavicular head alone: flexes humerus
SC head alone: extends humerus from overhead position; horizontal adduction at glenohumeral joint

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26
Q

Pectoralis major clavicular head origin

A

Anterior surface of medial 1/2 of clavicle

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27
Q

Pectoralis major sternocostal head origin

A

Anterior surface of sternum, upper 6 costal cartilages, & aponeurosis of external oblique muscles

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28
Q

Pectoralis major insertion

A

Lateral lip of intertubercular groove of humerus

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29
Q

Pectoralis major innervation

A

Lateral and Medial Pectoral nerve
Clavicular: C5-C6
SC: C7, C8-T1

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30
Q

Pectoralis minor action

A

Stabilizes scapula by drawing it inferiorly and anteriorly against thoracic wall

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31
Q

Pectoralis minor origin

A

3rd to 5th ribs near costal cartilages

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32
Q

Pectoralis minor insertion

A

Medial border & superior surface of coracoid process of scapula

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33
Q

Pectoralis minor innervation

A

Medial (C8, T1)
Lateral pectoral nerve (variable)

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34
Q

Anterior deltoid action

A

Abduction, flexion, internal rotation of humerus

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35
Q

Anterior deltoid origin

A

Lateral 1/3 of the clavicle, anterior surface

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36
Q

Anterior deltoid insertion

A

Deltoid tuberosity of the humerus

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37
Q

Anterior deltoid innervation

A

Axillary nerve, C5, C6

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38
Q

Middle deltoid action

A

Abduction humerus

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39
Q

Middle deltoid origin

A

Lateral aspect of acromion

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40
Q

Middle deltoid insertion

A

Deltoid tuberosity

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41
Q

Middle deltoid innervation

A

Axillary nerve, C5, C6

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42
Q

Posterior deltoid action

A

Extension, External Rotation, Abduction of humerus

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43
Q

Posterior deltoid origin

A

Inferior lip of crest of spine of scapula

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44
Q

Posterior deltoid insertion

A

Deltoid tuberosity

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45
Q

Posterior deltoid innervation

A

Axillary nerve, C5, C6

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46
Q

Supraspinatus action

A

Initiates & assists deltoid in abduction of humerus; holds head in glenoid cavity (rotator cuff)

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47
Q

Supraspinatus origin

A

Supraspinous fossa (medial 2/3) of scapula

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48
Q

Supraspinatus insertion

A

Superior facet on greater tubercle of humerus

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49
Q

Supraspinatus innervation

A

Suprascapular nerve C4, C5, C6

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50
Q

Infraspinatus action

A

External rotation humerus; hold humeral head in glenoid (rotator cuff)

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51
Q

Infraspinatus origin

A

Infraspinous fossa of scapula

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52
Q

Infraspinatus insertion

A

Middle facet greater tubercle of humerus

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53
Q

Infraspinatus innervation

A

Suprascapular nerve, C5, C6

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54
Q

Teres minor action

A

External rotation humerus; hold humeral head in gelnoid (rotator cuff)

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55
Q

Teres minor origin

A

Middle part of lateral border of scapula

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56
Q

Teres minor insertion

A

Inferior facet on greater tubercle of humerus

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57
Q

Teres minor innervation

A

Axillary nerve C5, C6

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58
Q

Subscapularis action

A

Internal rotation & adduction of humerus; hold head of humerus in place (rotator cuff)

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59
Q

Subscapularis origin

A

Subscapular fossa

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60
Q

Subscapularis insertion

A

Lesser tubercle of humerus

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61
Q

Subscapularis innervation

A

Upper & Lower subscapular nerve C5, C6, C7

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62
Q

Teres major action

A

Extension, adduction, Internal Rotation humerus

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63
Q

Teres major origin

A

Dorsal surface of inferior angle of scapula

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64
Q

Teres major insertion

A

Medial lip of inter tubercular sulcus/groove

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65
Q

Teres major innervation

A

Lower subscapular nerve, C5, C6

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66
Q

Rhomboids major action

A

Retract scapula; elevate scapula; downward rotation scapula; fix scapula against thoracic wall

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67
Q

Rhomboids major origin

A

Spinous processes TV2-TV5

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68
Q

Rhomboids major insertion

A

Medial border of scapula from spine to inferior angle

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69
Q

Rhomboids major innervation

A

Dorsal scapular nerve, C4-C5

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70
Q

Rhomboids minor action

A

Retract scapula; elevate scapula; downward rotation scapula; fix scapula against thoracic wall

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71
Q

Rhomboids minor origin

A

Nuchal ligament & spinous processes of CV7 & TV1

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72
Q

Rhomboids minor insertion

A

Medial border of scapula at the level of the spine

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73
Q

Rhomboids minor innervation

A

Dorsal scapular nerve, C4, C5

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74
Q

Latissimus dorsi action

A

Extension, adduction, internal rotation humerus

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75
Q

Latissimus dorsi origin

A

Thoracolumbar fascia, spinous processes TV6-TV12, inferior 3 or 4 ribs, iliac crest

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76
Q

Latissimus dorsi insertion

A

Floor of inter tubercular groove of humerus

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77
Q

Latissimus dorsi innervation

A

Thoracodorsal nerve, C6, C7, C8

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78
Q

Coracobrachialis action

A

Flexion with adduction of humerus

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79
Q

Coracobrachialis origin

A

Tip or apex of coracoid process of scapula

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80
Q

Coracobrachialis insertion

A

Middle 1/3, medial humerus

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81
Q

Coracobrachialis innervation

A

Musculocutaneous nerve, C5, C6, C7

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82
Q

Biceps brachii action

A

Long-weak shoulder flexion; weak abduction of humerus, external rotation
Both heads: elbow flexion with forearm supination

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83
Q

Biceps brachii short head origin

A

Coracoid process of scapula

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84
Q

Biceps brachii long head origin

A

Supraglenoid tubercle of scapula

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85
Q

Biceps brachii insertion

A

Radial tuberosity & fascia of forearm via bicipital aponeurosis

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86
Q

Biceps brachii innervation

A

Musculocutaneous nerve, C5, C6, C7

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87
Q

Brachialis action

A

Elbow flexion regardless of position

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88
Q

Brachialis origin

A

Distal half humerus, anterior surface

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89
Q

Brachialis insertion

A

Ulnar tuberosity & anterior aspect coronoid process of ulna

90
Q

Brachialis innervation

A

Musculocutaneous nerve C5, C6

91
Q

Brachioradialis action

A

Elbow flexion (midpronation most effective)

92
Q

Brachioradialis origin

A

Proximal 2/3 of lateral supracondylar ridge of humerus

93
Q

Brachioradialis insertion

A

Lateral surface of distal ned of radius

94
Q

Brachioradialis innervation

A

Radial nerve, C5, C6, C7

95
Q

Triceps action

A

All heads: elbow extension
Long head: resists dislocation of humerus

96
Q

Triceps long head origin

A

Infraglenoid tubercle of scapula

97
Q

Triceps lateral head origin

A

Posterior surface of humerus, superior to radial groove

98
Q

Triceps medial head origin

A

Posterior surface of humerus, inferior to radial groove

99
Q

Triceps insertion

A

Proximal end of olecranon process of the ulna & fascia of the forearm

100
Q

Triceps innervation

A

Radial nerve, C6, C7, C8

101
Q

Anconeus action

A

Assists in elbow extension

102
Q

Anconeus origin

A

Lateral epicondyle of humerus

103
Q

Anconeus insertion

A

Olecranon process of ulna

104
Q

Anconeus innervation

A

Radial nerve, C7, C8, T1

105
Q

Pronator teres action

A

Pronates forearm; flexes elbow

106
Q

Pronator teres origin

A

Humeral head: medial epicondyle of the humerus
Ulnar head: coronoid process of the ulna

107
Q

Pronator teres insertion

A

Middle of lateral surface of radius

108
Q

Pronator teres innervation

A

Median nerve, C6, C7

109
Q

Pronator quadratus action

A

Pronates forearm

110
Q

Pronator quadratus origin

A

Distal 1/4 of anterior surface of ulna

111
Q

Pronator quadratus insertion

A

Distal 1/4 anterior surface of radius

112
Q

Pronator quadratus innervation

A

Anterior interosseous nerve (from median nerve), C8-T1

113
Q

Supinator action

A

Supinates forearm

114
Q

Supinator origin

A

Lateral epicondyle humerus, radial collateral & annular ligaments, supinator fossa & crest of ulna

115
Q

Supinator insertion

A

Proximal radius, anterior, lateral, posterior surfaces

116
Q

Supinator innervation

A

Deep branch radial nerve, C7, C8

117
Q

Extensor carpi radialis longus action

A

Extension & abduction hand at wrist joint

118
Q

Extensor carpi radialis longus origin

A

Lateral supracondylar ridge of humerus

119
Q

Extensor carpi radialis longus insertion

A

Dorsal base of 2nd metacarpal bone

120
Q

Extensor carpi radialis longus innervation

A

Radial nerve, C6, C7

121
Q

Extensor carpi radial brevis action

A

Extension & abduction hand at wrist joint

122
Q

Extensor carpi radial brevis origin

A

Lateral epicondyle of humerus

123
Q

Extensor carpi radial brevis insertion

A

Dorsal base of 3rd metacarpal

124
Q

Extensor carpi radial brevis innervation

A

Deep branch of radial nerve, C7, C8

125
Q

Extensor digitorum action

A

Extension of medial 4 digits at MCP joint: assist with IP extension; extend hand at wrist joint

126
Q

Extensor digitorum origin

A

Lateral epicondyle of humerus common extensor tendon

127
Q

Extensor digitorum insertion

A

Base of middle phalanges of fingers of medial 4 digits via extensor expansion

128
Q

Extensor digitorum innervation

A

Posterior interosseous nerve, C7-C8 (continuation of the deep branch of radial nerve)

129
Q

Extensor Digiti Minimi action

A

Extend 5th digit at MCP & IP joints

130
Q

Extensor Digiti Minimi origin

A

Lateral epicondyle of humerus

131
Q

Extensor Digiti Minimi insertion

A

Extensor expansion of 5th digit

132
Q

Extensor Digiti Minimi innervation

A

Posterior interosseous nerve, C7-C8 (continuation of the deep branch of radial nerve)

133
Q

Extensor carpi ulnaris action

A

Extension & adduct hand at wrist

134
Q

Extensor carpi ulnaris origin

A

Lateral epicondyle humerus & posterior border of ulna

135
Q

Extensor carpi ulnaris insertion

A

Base of 5th metacarpal

136
Q

Extensor carpi ulnaris innervation

A

Posterior interosseous nerve, C7-C8 (continuation of the deep branch of radial nerve)

137
Q

Abductor Pollicis Longus action

A

Abduct thumb & extends it at CMC joint

138
Q

Abductor Pollicis Longus origin

A

Posterior surface of proximal halves of ulna, radius, and interosseous membrane

139
Q

Abductor Pollicis Longus insertion

A

Base of 1st metacarpal

140
Q

Abductor Pollicis Longus innervation

A

Posterior interosseous nerve, C7-C8 (continuation of the deep branch of radial nerve)

141
Q

Extensor Pollicis Brevis action

A

Extend proximal phalanx of thumb at MCP; extend at CMC

142
Q

Extensor Pollicis Brevis origin

A

Posterior surface of radius & interosseous membrane

143
Q

Extensor Pollicis Brevis insertion

A

Dorsal aspect base of proximal phalanx of thumb

144
Q

Extensor Pollicis Brevis innervation

A

Posterior interosseous nerve C7-C8 (continuation of the deep branch of radial nerve)

145
Q

Extensor Pollicis Longus action

A

Extend distal phalanx of thumb at IP; extend MCP & CMC joints

146
Q

Extensor Pollicis Longus origin

A

Posterior surface of middle 1/3 of ulna & interosseous membrane

147
Q

Extensor Pollicis Longus insertion

A

Base of distal phalanx of thumb

148
Q

Extensor Pollicis Longus innervation

A

Posterior interosseous nerve C7-C8 (continuation of the deep branch of radial nerve)

149
Q

Extensor indicis action

A

Extend 2nd digit; assists with wrist extension

150
Q

Extensor indicis origin

A

Posterior surface of distal 1/3 of ulna & interosseous membrane

151
Q

Extensor indicis insertion

A

Extensor expansion of 2nd digit

152
Q

Extensor indicis innervation

A

Posterior interosseous nerve C7-C8 (continuation of the deep branch of radial nerve)

153
Q

Flexor carpi radialis action

A

Flexes and abducts hand at the wrist

154
Q

Flexor carpi radialis origin

A

Medial epicondyle of the humerus from the common flexor origin

155
Q

Flexor carpi radialis insertion

A

Base of 2nd metacarpal

156
Q

Flexor carpi radialis innervation

A

Median nerve, C6-C7

157
Q

Flexor carpi ulnaris action

A

Flexes & adducts hand at the wrist

158
Q

Flexor carpi ulnaris origin

A

Humeral head: medial epicondyle of humerus
Ulnar head: olecranon & posterior border of ulna

159
Q

Flexor carpi ulnaris insertion

A

Pisiform, hook of hamate, and base of 5th metacarpal

160
Q

Flexor carpi ulnaris innervation

A

Ulnar nerve, C7-C8

161
Q

Palmaris Longus action

A

Assist wrist flexion; tense palmar aponeurosis

162
Q

Palmaris Longus origin

A

Medial epicondyle from the common flexor region

163
Q

Palmaris Longus insertion

A

Distal 1/2 of the flexor retinaculum and palmar aponeurosis

164
Q

Palmaris Longus Innervation

A

Median Nerve, C7-C8

165
Q

Flexor digitorum superficialis action

A

Flexes PIP joints of medial four digits; flexes MCP joints; assists wrist flexion

166
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

167
Q

Flexor digitorum profundus insertion

A

Bases of distal phalanges of medial 4 digits

168
Q

Flexor digitorum superficialis insertion

A

Bodies of middle phalanges of medial 4 digits

169
Q

Flexor digitorum superficialis innervation

A

Median nerve, C7-T1

170
Q

Flexor digitorum profundus action

A

DIP flexion of medial four digits; flexes PIP & MCP; assist wrist flexion

171
Q

Flexor digitorum profundus origin

A

Proximal 3/4 of medial & anterior surface of ulna & interosseous membrane

172
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

173
Q

Flexor Pollicis Longus action

A

Flexes IP, MCP, CMC of thumb

174
Q

Flexor Pollicis Longus origin

A

Anterior surface of radius & adjacent interosseous membrane

175
Q

Flexor Pollicis Longus insertion

A

Base of distal phalanx thumb

176
Q

Flexor Pollicis Longus innervation

A

Anterior interosseous nerve (from median nerve) C8-T1

177
Q

Abductor Pollicis Brevis action

A

Abduct thumb; assist thumb opposition

178
Q

Abductor Pollicis Brevis origin

A

Flexor retinaculum & tubercles of scaphoid & trapezium

179
Q

Abductor Pollicis Brevis insertion

A

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

180
Q

Abductor Pollicis Brevis innervation

A

Recurrent branch median nerve (C8, T1)

181
Q

Flexor Pollicis Brevis action (2 heads)

A

Flex thumb

182
Q

Flexor Pollicis Brevis origin

A

Flexor retinaculum & tubercles of scaphoid & trapezium

183
Q

Flexor Pollicis Brevis insertion

A

Lateral side of base of proximal phalanx of thumb

184
Q

Flexor Pollicis Brevis innervation

A

Superficial head: Recurrent branch of Median nerve (C8, T1)
Deep head: Deep branch of Ulnar nerve (C8, T1)

185
Q

Opponens Pollicis action

A

Oppose thumb

186
Q

Opponens Pollicis origin

A

Flexor retinaculum & tubercles of scaphoid & trapezium

187
Q

Opponens Pollicis insertion

A

LAteral aspect 1st MC

188
Q

Opponens Pollicis innervation

A

Recurrent branch Median nerve (C8, T1)

189
Q

Adductor Pollicis (2 heads) action

A

Adducts thumb

190
Q

Adductor Pollicis (2 heads) origin

A

Oblique: base of 2nd & 3rd MC, capitate, and adjacent carpals
Transverse: anterior surface of shaft of 3rd MC

191
Q

Adductor Pollicis insertion

A

Medial side of base of proximal phalanx of thumb

192
Q

Adductor Pollicis innervation

A

Medial side of base of proximal phalanx of 5th digit

193
Q

Adductor Pollicis Innervation

A

Deep branch Ulnar nerve (C8, T1)

194
Q

Abductor digiti minimi action

A

Abduct 5th digit; assist flexion of 5th proximal phalanx

195
Q

Abductor digiti minimi origin

A

Pisiform

196
Q

Abductor digiti minimi insertion

A

Medial side base of proximal phalanx of 5th digit

197
Q

Abductor digiti minimi innervation

A

Deep branch Ulnar nerve (C8, T1)

198
Q

Flexor digiti minimi (brevis) action

A

Flexes proximal phalanx of 5th digit

199
Q

Flexor digiti minimi (brevis) origin

A

Hook of the hamate & flexor retinaculum

200
Q

Flexor digiti minimi (brevis) insertion

A

Medial side base of proximal phalanx of 5th digit

201
Q

Flexor digiti minimi (brevis) innervation

A

Deep branch Ulnar nerve (C8, T1)

202
Q

Opponens Digiti (minimi) action

A

Draws 5th MC anteriorly to oppose the thumb

203
Q

Opponens Digiti (minimi) origin

A

Hook of the hamate & flexor retinaculum

204
Q

Opponens Digiti (minimi) insertion

A

Medial border of 5th MC

205
Q

Opponens Digiti (minimi) innervation

A

Deep branch Ulnar nerve (C8, T1)

206
Q

Lumbricals 1&2 action

A

Flex MC joints and extend IP joints

207
Q

Lumbricals 1&2 origin

A

Lateral 2 tendons of FDP

208
Q

Lumbricals 1&2 insertion

A

Lateral sides of extensor expansion of digits 2-5

209
Q

Lumbricals 1&2 innervation

A

Median nerve (C8,T1)

210
Q

Lumbricals 3&4 action

A

Flex MC joints and extend IP joints

211
Q

Lumbricals 3&4 origin

A

Bipennate from medial 3 tendons of FDP

212
Q

Lumbricals 3&4 insertion

A

Lateral sides of extensor expansion of digits 2-5

213
Q

Lumbricals 3&4 innervation

A

Deep branch of Ulnar nerve (C8, T1)

214
Q

Palmar interossei action

A

Adduct 2nd, 4th, and 5th digit toward midline; assist with MCP flexion and IP extension

215
Q

Palmar interossei origin

A

Palmar surfaces of 2nd, 4th, and 5th MC

216
Q

Palmar interossei insertion

A

Base of proximal phalanges & extend expansion of 2nd, 4th, and 5th digits

217
Q

Palmar interossei innervation

A

Deep branch of Ulnar nerve (C8, T1)

218
Q

Dorsal interossei action

A

Abduct digits 2-4 away from midline; assist with MCP flexion and IP extension

219
Q

Dorsal interossei origin

A

Bipennate adjacent sides of metacarpals

220
Q

Dorsal interossei insertion

A

Base of proximal phalanges & extend expansions of 2nd, 3rd (bilaterally), & 4th digits

221
Q

Dorsal interossei innervation

A

Deep branch of Ulnar nerve (C8, T1)

UE Anatomy OIAN (1 decks)

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