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Anatomy > Muscle OIA > Flashcards

Muscle OIA Flashcards

1
Q

What is the origin of the masseter?

A

Zygomatic arch

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2
Q

What is the insertion of the masster?

A

Mandibular angle and mandibular ramus

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3
Q

What is the action of the masseter?

A

Elevates mandible

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4
Q

What is the origin of the temporalis?

A

Temporal fossa

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5
Q

What is the insertion of the temporalis?

A

Coronoid process of the mandible

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6
Q

What is the action of the temporalis?

A

Elevates mandible

Retracts mandible

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7
Q

What is the origin of the sternocleidomastoid?

A

Manubrium and medial clavicle

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8
Q

What is the insertion of the sternocleidomastoid?

A

Mastoid process

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9
Q

What is the action of the sternocleidomastoid?

A

Flexes head

Rotates head

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10
Q

What is the origin of the scalenes?

A

Transverse processes of the cervical vertebrae

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11
Q

What is the insertion of the scalenes?

A

Anterior surface of ribs 1 + 2

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12
Q

What is the action of the scalenes?

A

Elevates ribs 1+2
Flexes head
Rotates neck

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13
Q

What is the origin of pectoralis major?

A

Sternal end of the clavicle
Clavicle
Ribs 1-6

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14
Q

What is the insertion of pectoralis major?

A

Greater tubercle

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15
Q

What is the action of pectoralis major?

A

Flexes arm at shoulder
Rotates arm medially
Adducts arm

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16
Q

What is the origin of pectoralis minor?

A

Ribs 3-5

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17
Q

What is the insertion of pectoralis minor?

A

Coracoid process of scapula

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18
Q

What is the action of pectoralis minor?

A

Depresses scapula

Rotates scapula downwards

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19
Q

What is the origin of serratus anterior?

A

Ribs 1-8

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20
Q

What is the insertion of serratus anterior?

A

Vertebral border of the scapula

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21
Q

What is the actions of serratus anterior?

A

Rotates scapula upwards

Protracts scapula

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22
Q

What is the origin of the external intercostals?

A

Inferior border of ribs

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23
Q

What is the insertion of the external intercostals?

A

Superior border of ribs

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24
Q

What is the action of the external intercostals?

A

Elevates rib cage

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25
Q

What is the origin of the internal intercostals?

A

Superior border of ribs

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26
Q

What is the insertion of the internal intercostals?

A

Inferior border of ribs

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27
Q

What is the action of the internal intercostals?

A

Depresses rib cage

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28
Q

What is the origin of external oblique?

A

Ribs 5-12

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29
Q

What is the insertion of external oblique?

A

Linea alba
Pubic crest
Pubic tubercle
Iliac crest

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30
Q

What is the action of the external obliques?

A

Flexes and rotates vertebral column

Compresses abdomen

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31
Q

What is the origin of the internal obliques?

A

Lumbar fascia
Iliac crest
Inguinal ligament

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32
Q

What is the insertion of the internal obliques?

A

Linea alba
Pubic crest
Ribs 5-12

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33
Q

What is the action of the internal obliques?

A

Flexes and rotates vertebral column

Compresses abdomen

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34
Q

What is the origin of rectus abdominis?

A

Pubic crest

Pubic symphysis

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35
Q

What is the insertion of rectus abdominis?

A

Xiphoid process

Ribs 5-7

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36
Q

What is the action of rectus abdominis?

A

Flexes and rotates vertebral column

Compresses abdomen

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37
Q

What is the origin of iliacus?

A

Iliac fossa

Ala of sacrum

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38
Q

What is the insertion of iliacus?

A

Lesser trochanter of the femur

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39
Q

What is the action of iliacus?

A

Flexes thigh at hip

Flexes trunk

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40
Q

What is the origin of psoas major?

A

Transverse processes of T12 - L5

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41
Q

What is the insertion of psoas major?

A

Lesser trochanter of the femur

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42
Q

What is the action of psoas major?

A

Flexes thigh at hip

Flexes trunk laterally

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43
Q

What is the origin of the deltoid?

A

Lateral 1/3 of clavicle
Spine of scapula
Acromion process of scapula

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44
Q

What is the insertion of the deltoid?

A

Deltoid tuberosity

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45
Q

What is the action of the deltoid?

A 
Abducts arm
Flexes arm at shoulder
Extends arm at shoulder 
Rotates arm medially 
Rotates arm laterally
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46
Q

What is the origin of the long head of biceps brachii?

A

Supraglenoid tubercle

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47
Q

What is the origin of the short head of biceps brachii?

A

Coracoid process

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48
Q

What is the insertion of biceps brachii?

A

Radial tuberosity

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49
Q

What is the action of biceps brachii?

A

Flexes forearm at elbow

Supinates forearm

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50
Q

What is the origin of brachialis?

A

Anterior humerus

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51
Q

What is the insertion of brachialis?

A

Coronoid process of ulna

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52
Q

What is the action of brachialis?

A

Flexes forearm at elbow

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53
Q

What is the origin of coracobrachialis?

A

Coracoid process

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54
Q

What is the insertion of coracobrachialis?

A

Medial surface of shaft of humerus

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55
Q

What is the action of coracobrachialis?

A

Flexes arm at shoulder

Adducts arm

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56
Q

What is the origin of brachioradialis?

A

Lateral supracondylar ridge of humerus

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57
Q

What is the insertion of brachioradialis?

A

Styloid process of radius

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58
Q

What is the action of brachioradialis?

A

Flexes forearm at elbow

Stabilizes elbow during flexion/extension

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59
Q

What is the origin of extensor carpi radialis longus?

A

Lateral supracondylar ridge of humerus

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60
Q

What is the insertion of extensor carpi radialis longus?

A

2nd metacarpal

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61
Q

What is the action of extensor carpi radialis longus?

A

Extends hand at wrist

Abducts hand

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62
Q

What is the origin of extensor carpi radialis brevis?

A

Lateral epicondyle of humerus

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63
Q

What is the insertion of extensor carpi radialis brevis?

A

3rd metacarpal

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64
Q

What is the action of extensor carpi radialis brevis?

A

Extends hand at wrist

Abducts hand

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65
Q

What is the origin of extensor digitorum?

A

Lateral epicondyle of humerus

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66
Q

What is the insertion of extensor digitorum?

A

Distal phalanges of digits 2-5

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67
Q

What is the action of extensor digitorum?

A

Extends distal interphalangeal joints

Extends hand at wrist

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68
Q

What is the origin of extensor carpi ulnaris?

A

Lateral epicondyle of humerus

Posterior ulna

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69
Q

What is the insertion of extensor carpi ulnaris?

A

5th metacarpal

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70
Q

What is the action of extensor carpi ulnaris?

A

Extends hand at wrist

Adducts hand

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71
Q

What is the origin of the supinator?

A

Lateral epicondyle of humerus

Proximal ulna

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72
Q

What is the insertion of the supinator?

A

Proximal end of radius

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73
Q

What is the action of the supinator?

A

Supinates forearm, obviously

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74
Q

What is the origin of abductor pollicis longus?

A

Posterior radius
Posterior ulna
Interosseous membrane

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75
Q

What is the insertion of abductor pollicis longus?

A

Trapezium

1st metacarpal

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76
Q

What is the action of abductor pollicis longus?

A

Abducts pollex

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77
Q

What is the origin of extensor pollicis brevis?

A

Posterior radius
Posterior ulna
Interosseous membrane

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78
Q

What is the insertion of extensor pollicis brevis?

A

Proximal phalanx of pollex

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79
Q

What is the action of extensor pollicis brevis?

A

Extends 1st metacarpal-phalangeal joint

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80
Q

What is the origin of extensor pollicis longus?

A

Posterior radius
Posterior ulna
Interosseous membrane

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81
Q

What is the insertion of extensor pollicis longus?

A

Distal phalanx of pollex

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82
Q

What is the action of extensor pollicis longus?

A

Extends 1st interphalangeal joint

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83
Q

What is the origin of extensor indicis?

A

Posterior ulna

Interosseous membrane

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84
Q

What is the insertion of extensor indicis?

A

Distal phalanx of 2nd digit

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85
Q

What is the action of extensor indicis?

A

Extends 2nd distal interphalangeal joint

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86
Q

What is the origin of extensor digiti minimi?

A

Lateral epicondyle of humerus

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87
Q

What is the insertion of extensor digiti minimi?

A

Distal phalanx of 5th digit

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88
Q

What is the action of extensor digiti minimi?

A

Extends 5th distal interphalangeal joint

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89
Q

What is the origin of sartorius?

A

Anterior superior iliac spine

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90
Q

What is the insertion of sartorius?

A

Medial surface of proximal tibia

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91
Q

What is the action of sartorius?

A

Flexes thigh at hip
Rotates thigh laterally
Abducts thigh
Flexes leg at knee

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92
Q

What is the origin of tensor fascia latae?

A

Anterior superior iliac spine

Iliac crest

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93
Q

What is the insertion of tensor fascia latae?

A

Iliotibial tract

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94
Q

What is the action of tensor fascia latae?

A

Flexes thigh at hip
Abducts thigh
Rotates thigh medially

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95
Q

What is the origin of iliopsoas?

A

Iliac fossa
Ala of sacrum
Transverse processes of T12 - L5

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96
Q

What is the insertion of iliopsoas?

A

Lesser trochanter

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97
Q

What is the action of iliopsoas?

A

Flexes thigh at hip

Flexes vertebral column

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98
Q

What is the origin of pectineus?

A

Superior famous of pubis

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99
Q

What is the insertion of pectineus?

A

Linea aspera

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100
Q

What is the action of pectineus?

A

Adducts thigh
Flexes thigh at hip
Rotates thigh medially

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101
Q

What is the origin of rectus femoris?

A

Anterior inferior iliac spine

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102
Q

What is the insertion of rectus femoris?

A

Patella

Tibial tuberosity

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103
Q

What is the action of rectus femoris?

A

Extends leg at knee

Flexes thigh at hip

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104
Q

What is the origin of vastus lateralis?

A

Greater trochanter
Intertrochanteric line
Linea aspera

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105
Q

What is the insertion of vastus lateralis?

A

Patella

Tibial tuberosity

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106
Q

What is the action of vastus lateralis?

A

Extends leg at knee

Stabilizes knee

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107
Q

What is the origin of vastus medialis?

A

Linea aspera

Intertrochanteric line

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108
Q

What is the insertion of vastus medialis?

A

Patella

Tibial tuberosity

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109
Q

What is the action of vastus medialis?

A

Extends leg at knee

Stabilizes patella

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110
Q

What is the origin of vastus intermedius?

A

Proximal shaft of femur

111
Q

What is the insertion of vastus intermedius?

A

Patella

Tibial tuberosity

112
Q

What is the action of vastus intermedius?

A

Extends leg at knee

113
Q

What is the origin of gracilis?

A

Inferior ramus and body of pubis

114
Q

What is the insertion of gracilis?

A

Medial surface of tibia

115
Q

What is the action of gracilis?

A

Adducts thigh
Flexes leg at knee
Rotates leg medially

116
Q

What is the origin of adductor longus?

A

Pubis (near pubic symphysis)

117
Q

What is the insertion of adductor longus?

A

Linea aspera of femur

118
Q

What is the action of adductor longus?

A

Adducts thigh
Flexes thigh at hip
Rotates thigh medially

119
Q

What is the origin of adductor brevis?

A

Inferior ramus and body of pubis

120
Q

What is the insertion of adductor brevis?

A

Linea aspera

Adductor tubercle

121
Q

What is the action of adductor brevis?

A

Adducts thigh

Rotates thigh medially

122
Q

What is the origin of adductor magnus?

A

Inferior ramus of the pubis
Ischial ramus
Ischial tuberosity

123
Q

What is the insertion of adductor magnus?

A

Linea aspera

Adductor tubercle

124
Q

What is the action of adductor magnus?

A

Adducts thigh
Rotates thigh medially
Flexes thigh at hip

125
Q

What is the origin of tibialis anterior?

A

Lateral condyle of tibia

Interosseous membrane

126
Q

What is the insertion of tibialis anterior?

A

Medial cuneiform

1st metatarsal

127
Q

What is the action of tibialis anterior?

A

Dorsiflexes foot at ankle

Inverts foot

128
Q

What is the origin of extensor hallucis longus?

A

Proximal shaft of fibula

Interosseous membrane

129
Q

What is the insertion of extensor hallucis longus?

A

Distal phalanx of the big toe

130
Q

What is the action of extensor hallucis longus?

A

Dorsiflexes foot at ankle

Extends big toe

131
Q

What is the origin of extensor digitorum longus?

A

Lateral condyle of tibia
Proximal fibula
Interosseous membrane

132
Q

What is the insertion of extensor digitorum longus?

A

Middle and distal phalanges of 2nd - 5th toes

133
Q

What is the action of extensor digitorum longus?

A

Extends 2nd-5th distal interphalangeal joints

134
Q

What is the origin of fibularis tertius?

A

Distal shaft of fibula

Interosseous membrane

135
Q

What is the insertion of fibularis tertius?

A

5th metatarsal

136
Q

What is the action of fibularis tertius?

A

Dorsiflexes foot at ankle

Everts foot

137
Q

What is the origin of fibularis longus?

A

Head of fibula

138
Q

What is the insertion of fibularis longus?

A

Medial cuneiform

1st metatarsal

139
Q

What is the action of fibularis longus?

A

Plantar flexes foot at ankle

Everts foot

140
Q

What is the origin of fibularis brevis?

A

Distal shaft of fibula

141
Q

What is the insertion of fibularis brevis?

A

5th metatarsal

142
Q

What is the action of fibularis brevis?

A

Plantar flexes foot at ankle

Everts foot

143
Q

What is the origin of trapezius?

A

Occipital bone

Spinous processes of C7 - T12

144
Q

What is the insertion of trapezius?

A

Lateral 1/3 of clavicle
Spine of scapula
Acromion process

145
Q

What is the action of trapezius?

A

Elevates scapula
Depresses scapula
Rotates scapula
Adducts scapula

146
Q

What is the origin of latissimus dorsi?

A

Spinous processes of T7 - T12
Ribs 9 - 12
Iliac crest

147
Q

What is the insertion of latissimus dorsi?

A

Intertubercular groove (sulcus)

148
Q

What is the action of latissimus dorsi?

A

Extends arm at shoulder
Adducts arm
Rotates arm medially

149
Q

What is the origin of levator scapulae?

A

Transverse processes of C1 - C4

150
Q

What is the insertion of levator scapulae?

A

Vertebral border of the scapula

151
Q

What is the action of levator scapulae?

A

Elevates scapula

Downwardly rotates scapula

152
Q

What is the origin of rhomboid major?

A

Spinous processes of T2 - T5

153
Q

What is the insertion of rhomboid major?

A

Vertebral border of the scapula

154
Q

What is the action of rhomboid major?

A

Adducts scapula

Downwardly rotates scapula

155
Q

What is the origin of rhomboid minor?

A

Spinous processes of C7 - T1

156
Q

What is the insertion of rhomboid minor?

A

Vertebral border of the scapula

157
Q

What is the action of rhomboid minor?

A

Adducts scapula

Downwardly rotates scapula

158
Q

What is the origin of supraspinatus?

A

Supraspinous fossa

159
Q

What is the insertion of supraspinatus?

A

Greater tubercle

160
Q

What is the action of supraspinatus?

A

Abducts arm

161
Q

What is the origin of infraspinatus?

A

Infraspinous fossa

162
Q

What is the insertion of infraspinatus?

A

Greater tubercle

163
Q

What is the action of infraspinatus?

A

Rotates arm laterally

164
Q

What is the origin of teres major?

A

Inferior angle of scapula

165
Q

What is the insertion of teres major?

A

Lesser tubercle

166
Q

What is the action of teres major?

A

Adducts arm
Extends arm at shoulder
Rotates arm medially

167
Q

What is the origin of teres minor?

A

Lateral border of scapula

168
Q

What is the insertion of teres minor?

A

Greater tubercle

169
Q

What is the action of teres minor?

A

Rotates arm laterally

170
Q

What is the origin of subscapularis?

A

Subscapular fossa

171
Q

What is the insertion of subscapularis?

A

Lesser tubercle

172
Q

What is the action of subscapularis?

A

Rotates arm medially

173
Q

What is the origin of splenius capitis?

A

Spinous processes of C6 - T7

174
Q

What is the insertion of splenius capitis?

A

Mastoid process

Occipital bone

175
Q

What is the action of splenius capitis?

A

Extends vertebral column

176
Q

What is the origin of semispinalis capitis?

A

Transverse process of C7 - T12

177
Q

What is the insertion of semispinalis capitis?

A

Occipital bone

178
Q

What is the action of semispinalis capitis?

A

Extends vertebral column

179
Q

What is the origin of iliocostalis?

A

Iliac crest

Ribs 3-12

180
Q

What is the insertion of iliocostalis?

A

Inferior border of ribs

Transverse processes of C4 - C6

181
Q

What is the action of iliocostalis?

A

Extends vertebral column

182
Q

What is the origin of longissimus?

A

Transverse processes of C4 - L5

183
Q

What is the insertion of longissimus?

A

Mastoid process

184
Q

What is the action of longissimus?

A

Extends vertebral column

185
Q

What is the origin of spinalis?

A

Spinous processes of T7 - L3

186
Q

What is the insertion of spinalis?

A

Spinous processes of C4 - T6

187
Q

What is the action of spinalis?

A

Extends vertebral column

188
Q

What is the origin of the long head of triceps brachii?

A

Infraglenoid tubercle

189
Q

What is the insertion of the long head of triceps brachii?

A

Olecranon process of ulna

190
Q

What is the action of the long head of triceps brachii?

A

Extends forearm at elbow

191
Q

What is the origin of the lateral head of triceps brachii?

A

Posterior surface of shaft of humerus

192
Q

What is the insertion of the lateral head of triceps brachii?

A

Olecranon process of ulna

193
Q

What is the action of the lateral head of triceps brachii?

A

Extends the forearm at elbow

194
Q

What is the origin of the medial head of triceps brachii?

A

Posterior surface of shaft of humerus

195
Q

What is the insertion of the medial head of triceps brachii?

A

Olecranon process of ulna

196
Q

What is the action of the medial head of triceps brachii?

A

Extends forearm at elbow

197
Q

What is the origin of flexor carpi radialis?

A

Medial epicondyle of humerus

198
Q

What is the insertion of flexor carpi radialis?

A

2nd and 3rd metacarpals

199
Q

What is the action of flexor carpi ulnaris?

A

Flexes hand at wrist

Abducts hand

200
Q

What is the origin of palmaris longus?

A

Medial epicondyle of humerus

201
Q

What is the insertion of palmaris longus?

A

Palmar aponeurosis

202
Q

What is the action of palmaris longus?

A

Flexes hand at wrist

203
Q

What is the origin of flexor carpi ulnaris?

A

Medial epicondyle of humerus
Olecranon process of ulna
Shaft of ulna

204
Q

What is the insertion of flexor carpi ulnaris?

A

Pisiform
Hamate
5th metacarpal

205
Q

What is the action of flexor carpi ulnaris?

A

Flexes hand at wrist

Adducts hand

206
Q

What is the origin of flexor digitorum superficialis?

A

Medial epicondyle of humerus
Coronoid process of ulna
Shaft of radius

207
Q

What is the insertion of flexor digitorum superficialis?

A

Middle phalanges of 2nd - 5th digits

208
Q

What is the action of flexor digitorum superficialis?

A

Flexes hand at wrist

Flexes proximal interphalangeal joints

209
Q

What is the origin of flexor digitorum profundus?

A

Ulna

Interosseous membrane

210
Q

What is the insertion of flexor digitorum profundus?

A

Distal phalanges of 2nd - 5th digits

211
Q

What is the action of flexor digitorum profundus?

A

Flexes distal interphalangeal joints

212
Q

What is the origin of flexor pollicis longus?

A

Anterior radius

Interosseous membrane

213
Q

What is the insertion of flexor pollicis longus?

A

Distal phalanx of pollex

214
Q

What is the action of flexor pollicis longus?

A

Flexes 1st interphalangeal joint

215
Q

What is the origin of pronator quadratus?

A

Distal and anterior ulna

216
Q

What is the insertion of pronator quadratus?

A

Distal and anterior radius

217
Q

What is the action of pronator quadratus?

A

Pronates forearm

218
Q

What is the origin of pronator teres?

A

Medial epicondyle of humerus

219
Q

What is the insertion of pronator teres?

A

Lateral radius

220
Q

What is the action of pronator teres?

A

Pronates forearm

221
Q

What is the origin of abductor pollicis brevis?

A

Scaphoid
Trapezium
Flexor retinaculum

222
Q

What is the insertion of abductor pollicis brevis?

A

Proximal phalanx of thumb

223
Q

What is the action of abductor pollicis brevis?

A

Abducts thumb

224
Q

What is the origin of opponens pollicis?

A

Trapezium

Flexor retinaculum

225
Q

What is the insertion of opponens pollicis?

A

1st metacarpal

226
Q

What is the action of opponens pollicis?

A

Opposition

227
Q

What is the origin of flexor pollicis brevis?

A

Trapezium

Flexor retinaculum

228
Q

What is the insertion of flexor pollicis brevis?

A

Proximal phalanx of pollex (thumb)

229
Q

What is the action of flexor pollicis brevis?

A

Flexes thumb

230
Q

What is the origin of adductor pollicis?

A

Capitate

Bases of 2nd - 4th metacarpals

231
Q

What is the insertion of adductor pollicis?

A

Proximal phalanx of pollex (thumb)

232
Q

What is the action of adductor pollicis?

A

Adducts thumb

Opposition

233
Q

What is the origin of gluteus maximus?

A

Posterior surface of ala of ilium
Sacrum
Coccyx

234
Q

What is the insertion of gluteus maximus?

A

Iliotibial tract

Gluteal tuberosity

235
Q

What is the action of gluteus maximus?

A

Extends thigh at hip
Rotates thigh laterally
Abducts thigh

236
Q

What is the origin of gluteus medius?

A

Lateral surface of ilium

237
Q

What is the insertion of gluteus medius?

A

Greater trochanter

238
Q

What is the action of gluteus medius?

A

Abducts thigh

Rotates thigh medially

239
Q

What is the origin of gluteus minimis?

A

Lateral surface of ilium

240
Q

What is the insertion of gluteus minimis?

A

Greater trochanter

241
Q

What is the action of gluteus minimis?

A

Abducts thigh

Rotates thigh medially

242
Q

What is the origin of piriformis?

A

Lateral surface of sacrum

243
Q

What is the insertion of piriformis?

A

Greater trochanter

244
Q

What is the action of piriformis?

A

Rotates thigh laterally when hip is extended

245
Q

What is the origin of quadratus femoris?

A

Ischial tuberosity

246
Q

What is the insertion of quadratus femoris?

A

Intertrochanteric crest

247
Q

What is the action of quadratus femoris?

A

Rotates thigh laterally

248
Q

What is the origin of the long head of biceps femoris?

A

Ischial tuberosity

Linea aspera

249
Q

What is the insertion of the long head of biceps femoris?

A

Head of fibula

Lateral condyle of tibia

250
Q

What is the action of the long head of biceps femoris?

A

Extends thigh at hip
Flexes leg at knee
Rotates leg laterally

251
Q

What is the origin of the short head of biceps femoris?

A

Linea aspera

252
Q

What is the insertion of the short head of biceps femoris?

A

Head of fibula

Lateral condyle of tibia

253
Q

What is the action of the short head of biceps femoris?

A

Flexes leg at knee

Rotates leg laterally

254
Q

What is the origin of semitendinosus?

A

Ischial tuberosity

255
Q

What is the insertion of semitendinosus?

A

Medial surface of proximal shaft of tibia

256
Q

What is the action of semitendinosus?

A

Extends thigh at hip
Flexes leg at knee
Rotates leg medially

257
Q

What is the origin of semimembranosus?

A

Ischial tuberosity

258
Q

What is the insertion of semimembranosus?

A

Medial condyle of tibia

259
Q

What is the action of semimembranosus?

A

Extends thigh at hip
Flexes leg at knee
Rotates leg medially

260
Q

What is the origin of gastrocnemius?

A

Lateral condyle of femur

Medial condyle of femur

261
Q

What is the insertion of gastrocnemius?

A

Calcaneus

262
Q

What is the action of gastrocnemius?

A

Plantar flexes foot at ankle

263
Q

What is the origin of soleus?

A

Proximal tibia
Proximal fibula
Interosseous membrane

264
Q

What is the insertion of soleus?

A

Calcaneus

265
Q

What is the action of soleus?

A

Plantar flexes foot at ankle

266
Q

What is the origin of tibialis posterior?

A

Proximal tibia
Proximal fibula
Interosseous membrane

267
Q

What is the insertion of tibialis posterior?

A

Navicular

2nd - 4th metatarsals

268
Q

What is the action of tibialis posterior?

A

Plantar flexes foot at ankle

Inverts foot

269
Q

What is the origin of flexor digitorum longus?

A

Posterior shaft of tibia

270
Q

What is the insertion of flexor digitorum longus?

A

Distal phalanges of 2nd - 5th digits (toes)

271
Q

What is the action of flexor digitorum longus?

A

Plantar flexes foot at ankle
Inverts foot
Flexes 2nd - 5th distal interphalangeal joints

272
Q

What is the origin of flexor hallucis longus?

A

Middle shaft of fibula

Interosseous membrane

273
Q

What is the insertion of flexor hallucis longus?

A

Distal phalanx of hallux (big toe)

274
Q

What is the action of flexor hallucis longus?

A

Plantar flexes foot at ankle
Inverts foot
Flexes big toe

Anatomy (5 decks)

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