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Anatomy > OINA broken down > Flashcards

OINA broken down Flashcards

1
Q

What is the origin of the trapezius?

A

The external occipital protuberance, ligamentum nuchae, spinous processes of C7 to T12

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2
Q

What is the insertion of the trapezius?

A

Posterior border of lateral third of the clavicle, acromion process, and the spine of the spatula

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3
Q

What is the innervation of the trapezius?

A

Spinal root of the accesory nerve CN XI

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4
Q

What is the action of the trapezius?

A

Elevation from the upper fibers, retraction from the middle fibers, depression from the lower fibers

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5
Q

What is the origin of latissimus dorsi

A

The spinous processes of the vertebrate T7-L5, thoracolumbar fascia, iliac crest, inferior 3-4 ribs, and the inferior angle of the scapula

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6
Q

Insertion of latissimus dorsi

A

Medial lip of the intertubercular groove of the humerus (anterior to teres major)

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7
Q

What is the innervation of latissimus dorsi

A

Thoracodorsal nerve

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8
Q

Action of the latissimus dorsi

A

Extends, adducts, and medially rotates the humerus, elevates the body when climbing

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9
Q

Origin of the levator scapula

A

Posterior tubercles of transverse processes of C1-C4 vertebrae

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10
Q

Insertion of levator scapula

A

Superior part of the scapula

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11
Q

Innervation of levator scapula

A

Dorsal scapula nerve C4-5

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12
Q

Action of the levator scapula

A

Elevate the scapula, rotate head to the same side(ipsilateral rotation)

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13
Q

Origin of rhomboid major

A

Spinous process of T2-T5

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14
Q

Insertion of rhomboid major

A

Medial border of the scapula from the level of the spine to the inferior angle

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15
Q

Nerve of the rhomboid major

A

Dorsal scapular nerve C4-5

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16
Q

Action of rhomboid major

A

Retract and downwardly rotates the scapula

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17
Q

Origin of the rhomboid minor

A

Spinous processes of C7-T1 and the ligamentum nuchae

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18
Q

Insertion of the rhomboid minor

A

Medial border of the scapula from the level of the spine to the superior angle

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19
Q

Nerve to rhomboid minor

A

Dorsal scapular nerve. C4-5

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20
Q

Action of rhomboid minor

A

Retracts and downwardly rotates the scapula

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21
Q

Origin of serratus posterior inferior

A

Spinous processes of T11-L2

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22
Q

Insertion of serratus posterior inferior

A

The inferior 3-4 ribs

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23
Q

Nerve of serratus posterior inferior

A

Ventral primary rami of last 4 thoracic nerves

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24
Q

Action of serratus posterior inferior

A

Depress the inferior 3-4 ribs to prevent superior pull by the diaphragm

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25
Q

Origin of erector spinae

A

Broad tendon that attaches to the iliac crest, sacrum, sacroiliac ligaments, and sacral and inferior lumbar spinous processes

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26
Q

Innervation of the erector spinae

A

Dorsal primary rami

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27
Q

Origin of the external abdominal oblique

A

External surface of the 5th-12th ribs

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28
Q

Insertion of external abdominal oblique

A

Linea alba, pubic crest, iliac crest, pubic symphysis

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29
Q

Innervation of external abdominal oblique

A

Inferior 5 thoracic nerves and subcostal nerve (T12) and iliohypogastric

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30
Q

Action of the external abdominal oblique

A

Flex, and rotate the trunk, laterally rotate the trunk, and compress the abdominal contents

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31
Q

Origin of the transversus abdominis

A

Thoracolumbar fascia, iliac crest, lateral one third of the inguinal ligament, internal surface of costal cartilages 7-12

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32
Q

Insertion of the transversus abdominis

A

Linea alba, pubic crest, pubic, symphysis

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33
Q

Innervation of the transversus abdominis

A

Lower 5 thoracic nerves, subcostal, iliohypogastric

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34
Q

Action of the transversus abdominis

A

Compress and support abdominal viscera

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35
Q

Origin of psoas major

A

Transverse processes, bodies, and IVD of T12-L5

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36
Q

Insertion of psoas major

A

lesser trochanter with iliacus

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37
Q

Innervation of psoas major

A

ventral primary rami of L1-L3

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38
Q

Action of psoas major

A

Flexion of the thigh, lateral flexion of the trunk, and flexion of the trunk

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39
Q

Origin of psoas minor

A

Bodies of vertebrate T12- L1 and the disc in between

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40
Q

Insertion of psoas minor

A

Pubic bone

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41
Q

Innervation of psoas minor

A

Ventral primary ramus L1

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42
Q

Action of the psoas minor

A

Flexion of the pelvis and vertebral column

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43
Q

Origin of iliacus

A

Iliac fossa

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44
Q

Insertion of iliacus

A

Lesser trochanter with psoas major

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45
Q

Innervation of iliacus

A

Femoral nerve

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46
Q

Action of iliacus

A

flexion of the thigh

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47
Q

Origin of quadratus lumborum

A

Iliac crest, iliolumbar ligament, and transverse processes of lower lumbar vertebrae

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48
Q

Insertion of quadratus lumborum

A

Rib 12, transverse process of upper lumbar vertebrae

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49
Q

Innervation of quadratus lumborum

A

Subcostal and upper lumbar ventral primary rami

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50
Q

Action of the quadratus lumborum

A

Flexion of the trunk laterally, extend vertebral column, elevate the hip, stabilize 12th rib against inspiration

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51
Q

Origin of levator ani

A

Body of the pubis, obturator fascia, and ischial spine

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52
Q

Insertion of the levator ani

A

Coccyx

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53
Q

Innervation of levator ani

A

Nerve to the levator ani (S3, S4)

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54
Q

Action of levator ani

A

Forms muscular sling to support abdominopelvic viscera, hold pelvic viscera in position, assist with abdominopelvic cavity compression, utilized with coughing, sneezing, vomitting, etc

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55
Q

Origin of the coccygeus

A

Ischial spine

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56
Q

Insertion of the coccygeus

A

Inferior end of the sacrum & coccyx

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57
Q

Innervation of the coccygeus

A

Pudendal: Branches of S4 and S5 spinal nerves

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58
Q

Action of the coccygeus

A

Supports pelvic viscera, forms posterior part of diaphragm

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59
Q

Origin of the rectus femoris

A

AIIS, and rim of acetabulum (superior attachment, stays still)

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60
Q

Insertion of the rectus femoris

A

Tibial tuberosity via the patellar liagment (inferior attachment, moves)

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61
Q

Innervation of the rectus femoris

A

Femoral nerve

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62
Q

Action of the rectus femoris

A

Flex the hip and extend the knee

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63
Q

Origin of vastus intermedius

A

Anterior surface of the femur

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64
Q

Insertion of vastus intermedialis

A

Tibial tuberosity via the patellar ligament

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65
Q

Innervation of the vastus intermedius

A

Femoral nerve

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66
Q

Action of the vastus intermedius

A

Extend the knee

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67
Q

Origin of vastus lateralis

A

Lateral surface of the femur

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68
Q

Insertion of vastus lateralis

A

Tibial tuberosity via the patellar ligament

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69
Q

innervation of vastus lateralis

A

Femoral nerve

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70
Q

Action of vastus intermedialis

A

Extends the knee

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71
Q

Origin of vastus medialis

A

Medial surface of the femur and tendon of the adductor magnus

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72
Q

Insertion of vastus medialis

A

Tibial tuberosity via the patellar ligament

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73
Q

Innervation of vastus medialis

A

Femoral nerve

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74
Q

Action of vastus medialis

A

Extend the knee (control tracking of patella)

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75
Q

Origin of the sartorius (tailor’s muscle)

A

ASIS

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76
Q

Insertion of the sartorius

A

Superior end of the medial surface of the tibia (pes anserine)

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77
Q

Innervation of sartorius

A

Femoral nerve

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78
Q

Action of sartorius

A

Flexes and lateral rotates thigh at hip joint, weak abductor of thigh and weak flexor of the leg

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79
Q

Origin of iliapsoas

A

Anterolateral aspect of vertebral bodies of the transverse processes of the vertebral body

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80
Q

Insertion of the iliapsoas

A

Iliapsoas tendon at lesser trochanter in the femur

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81
Q

Origin of the pectineus

A

Pectineal line of the superior ramus of the pubis

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82
Q

Insertion of the pectineus

A

Pectineal line of the femur

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83
Q

Innervation of the pectineus

A

Femoral and obturator nerve

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84
Q

Action of the pectineus

A

Flex and adduct thigh

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85
Q

Origin of gracilis

A

Inferior ramus of the pubis

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86
Q

Insertion of gracillis

A

Medial surface of tibia, inferior to the condyle

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87
Q

Innervation of gracilis

A

Obturator nerve

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88
Q

Action of gracilis

A

Adduct thigh, flex leg

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89
Q

Origin of adductor longus

A

Body of the pubis

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90
Q

Insertion of adductor longus

A

Distal 2/3 of the linea aspera

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91
Q

Innervation of adductor longus

A

Obturator nerve

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92
Q

Action of adductor longus

A

Adduct and flex thigh

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93
Q

Origin of adductor magnus

A

Tuberosity and ramus of the ischium

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94
Q

Insertion of adductor magnus

A

Linea aspera and adductor tubercle

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95
Q

Innervation of adductor magnus

A

Obturator nerve and tibial portion of the sciatic nerve

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96
Q

Action of adductor magnus

A

Adducts and flexes thigh, extends thigh

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97
Q

Origin of adductor brevis

A

Inferior ramus of the pubis

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98
Q

Insertion of adductor brevis

A

Femur

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99
Q

Innervation of adductor brevis

A

Obturator nerve

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100
Q

Action of adductor brevis

A

Adduct and flex thigh

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101
Q

Origin of gluteus maximus

A

(superior & medial attachment): ilium posterior to posterior gluteal line, sacrum, sacrotuberous ligament, coccyx

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102
Q

Insertion of gluteus maximus

A

(inferior & lateral attachment): gluteal tuberosity and IT band

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103
Q

Innervation of gluteus maximus

A

Inferior gluteal nerve

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104
Q

Action of gluteus maximus

A

Extends the thigh when running and climbing, sit to stand, laterally rotates hip

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105
Q

Origin of the piriformis

A

Superior attachment: pelvic surface of the sacrum

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106
Q

Insertion of the piriformis

A

Inferior attachment: greater trochanter

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107
Q

Innervation of the piriformis

A

Nerve to piriformis

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108
Q

Action of piriformis

A

Lateral rotation and extension of thigh

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109
Q

Origin of gluteus medius

A

Superior attachment: Ilium between iliac crest and superior gluteal line

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110
Q

Insertion of gluteus medius

A

Inferior attachment: greater trochanter

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111
Q

Innervation of the gluteus medius

A

Superior gluteal nerve

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112
Q

Action of gluteus medius

A

Abducts and medially rotates thigh

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113
Q

Origin of the obturator internus

A

Superior attachment: Obturator membrane

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114
Q

Insertion of obturator internus

A

Greater trochanter

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115
Q

Innervation of obturator internus

A

Nerve to obturator internus

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116
Q

Action of obturator internus

A

Laterally rotates and extends thigh

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117
Q

Origin of superior gemellus

A

Superior attachment: Ischial spine

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118
Q

Insertion of superior gemellus

A

Inferior attachment: greater trochanter

119
Q

Innervation of superior gemellus

A

Nerve to obturator internus

120
Q

Action of superior gemellus

A

Laterally rotates and extends thigh

121
Q

Origin of inferior gemellus

A

Ischial tuberosity

122
Q

Insertion of inferior gemellus

A

Greater trochanter

123
Q

Innervation of inferior gemellus

A

Nerve to quadratus femoris

124
Q

Action of inferior gemellus

A

Laterally rotates and extends thigh

125
Q

Origin of quadratus femoris

A

Ischial tuberosity

126
Q

Insertion of quadratus femoris

A

Intertrochanteric crest

127
Q

Innervation of quadratus femoris

A

Nerve to quadratus femoris

128
Q

Action of quadratus femoris

A

Laterally rotates and extends thigh

129
Q

Origin of gluteus minimus

A

Ilium between superior and inferior gluteal lines

130
Q

Insertion of gluteus minimus

A

Greater trochanter

131
Q

Innervation of gluteus minimus

A

Superior gluteal nerve

132
Q

Action of gluteus minimus

A

Abduct and medially rotate the thigh

133
Q

Origin of obturator externus

A

Obturator membrane

134
Q

Insertion of obturator externus

A

Trochanteric fossa

135
Q

Innervation of obturator externus

A

Obturator nerve

136
Q

Action of obturator externus

A

Adduct and laterally rotate the thigh

137
Q

Origin of TFL

A

Iliac crest

138
Q

Insertion of TFL

A

IT band

139
Q

Innervation of TFL

A

superior gluteal nerve

140
Q

Actions of TFL

A

Abducts and flexes thigh

141
Q

Origin of bicep femoris (long head)

A

Ischial tuberosity

142
Q

Origin of bicep femoris (short head)

A

Linea aspera

143
Q

Insertion of bicep femoris

A

Head of the fibula

144
Q

Innervation of bicep femoris (long head)

A

Tibial portion of sciatic nerve

145
Q

Innervation of bicep femoris (short head)

A

Common peroneal portion of sciatic nerve

146
Q

Action of bicep femoris

A

Extend thigh and flex leg (knee)

147
Q

Origin of semitendinosus

A

Ischial tuberosity

148
Q

Insertion of semitendinosus

A

Medial surface of tibia, inferior to the condyle

149
Q

Innervation of semitendinosus

A

Tibial portion of sciatic nerve

150
Q

Action of semitendinosus

A

Extend thigh, flex leg, and medially rotate leg

151
Q

Origin of semimembranosus

A

Ischial tuberosity

152
Q

Insertion of semimembranosus

A

Medial condyle of the tibia

153
Q

Innervation of semimembranosus

A

Tibial portion of sciatic

154
Q

Action of semimembranosus

A

Extend thigh, flex leg and medially rotate leg

155
Q

Origin of tibialis anterior

A

Superior 2/3 lateral surface of the tibia

156
Q

Insertion of tibialis anterior

A

Medial cuneiform and base of first metatarsal

157
Q

Innervation of tibialis anterior

A

Deep peroneal nerve

158
Q

Action of tibialis anterior

A

Dorsiflexion and inversion of the foot

159
Q

Origin of extensor digitorum longus

A

Superior 2/3 of the fibula

160
Q

Insertion of extensor digitorum longus

A

Middle and distal phalanges of the lateral 4 toes (via extensor expansor hood)

161
Q

Innervation of extensor digitorum longus

A

Deep peroneal nerve

162
Q

Action of extensor digitorum longus

A

Dorsiflexion of the foot and extension of the toes

163
Q

Origin of extensor hallicus longus

A

Middle 1/3 fibula

164
Q

Insertion of extensor hallicus longus

A

Base of distal phalanx of hallux

165
Q

Innervation of extensor hallicus longus

A

Deep peroneal

166
Q

Action of extensor hallicus longus

A

Dorsiflexion of the foot and extension of the hallux

167
Q

Origin of peroneus tertius

A

Distal end of the fibula

168
Q

Insertion of peroneus tertius

A

Base of the 5th metatarsal

169
Q

Innervation of peroneus tertius

A

Deep peroneal

170
Q

Action of peroneus tertius

A

Dorsiflexion of the foot and eversion of the foot

171
Q

Origin of extensor digitorum brevis

A

Calcaneus (anterior surface)

172
Q

Insertion of extensor digitorum brevis

A

Long extensor tendons of digits 2-4 (distal attachment)

173
Q

Innervation of extensor digitorum brevis

A

Deep peroneal

174
Q

Action of extensor digitorum brevis

A

Extension of digits 2-4

175
Q

Origin of extensor hallucis brevis

A

Calcaneus (anterior surface, medial to the extensor digitorum brevis)

176
Q

Insertion of extensor hallucis brevis

A

Base of proximal phalanx of hallux

177
Q

Innervation of extensor hallucis brevis

A

Deep peroneal

178
Q

Action of extensor hallucis brevis

A

Extension of the big toe

179
Q

Origin of peroneus longus

A

Superior 2/3 of the fibula

180
Q

Insertion of peroneus longus

A

Base of the 1st metatarsal

181
Q

Innervation of peroneus longus

A

Superficial peroneal

182
Q

Action of peroneus longus

A

Eversion and plantarflexion of the foot

183
Q

Origin of peroneus brevis

A

Distal end of the fibula

184
Q

Insertion of peroneus brevis

A

Base of the 5th metatarsal

185
Q

Innervation of peroneus brevis

A

superficial peroneal

186
Q

Action of peroneus brevis

A

Eversion and plantarflexion of the foot

187
Q

Origin of gastrocnemius

A

Lateral head from lateral condyle of femur (posterior surface of femur), medial head from medial condyle of femur

188
Q

Insertion of gastrocnemius

A

Calcaneus (by the achilles tendon into the calcaneus)

189
Q

Innervation of gastrocnemius

A

tibial nerve

190
Q

Action of gastrocnemius

A

Plantarflexion of foot, flexion of leg (knee)

191
Q

Origin of soleus

A

Posterior surface of fibula and tibia (around the soleal line)

192
Q

Insertion of soleus

A

Calcaneus (by the achilles tendon)

193
Q

Innervation of soleus

A

Tibial nerve

194
Q

Action of the soleus

A

Plantarflexion of the foot

195
Q

Origin of plantaris

A

lateral condyle of femur

196
Q

Insertion of plantaris

A

Calcaneus or calcaneal tendon

197
Q

Innervation of plantaris

A

Tibial nerve

198
Q

Action of the plantaris

A

Plantarflexion of the foot, flexion of leg (does both weakly)

199
Q

Origin of flexor digitorum longus

A

Posterior surface of the tibia

200
Q

Insertion of the flexor digitorum longus

A

Distal phalanx of lateral 4 digits

201
Q

Innervation of flexor digitrum longus

A

Tibial nerve

202
Q

Action of flexor digitorum longus

A

Flexion of digits 2-5 and plantarflexion of the foot

203
Q

Origin of flexor hallicus longus

A

Distal end of the fibula

204
Q

Insertion of the flexor hallicus longus

A

Distal phalanx of the big toe

205
Q

Innervation of flexor hallicus longus

A

Tibial nerve

206
Q

Action of flexor hallicus longus

A

Flexion of hallux and plantarflexion of the foot

207
Q

Origin of the tibialis posterior

A

Tibia, fibula, and interosseous membrane

208
Q

Insertion of tibialis posterior

A

Navicular, cuneiform, cuboid, and base of the 2nd, 3rd, and 4th metatarsal

209
Q

Innervation of tibialis posterior

A

Tibial nerve

210
Q

Action of tibialis posterior

A

Inversion and plantarflexion of the foot

211
Q

Origin of the popliteus

A

Posterior surface of the upper end of the tibia

212
Q

Insertion of the popliteus

A

lateral condyle of the femur

213
Q

Innervation of the popliteus

A

Tibial nerve

214
Q

Action of the popliteus

A

Rotation of knee joint(main action), knee flexion (weak)

215
Q

Origin of the abductor hallicus

A

Medial calcaneus and plantar aponeurosis

216
Q

Insertion of the abductor hallicus

A

Proximal phalanx of hallux

217
Q

Innervation of the abductor hallicus

A

Medial plantar nerve

218
Q

Action of the abductor hallicus

A

Abduct and flex hallux at MTP joint

219
Q

Origin of flexor digitorum brevis

A

Medial calcaneus and plantar aponeurosis

220
Q

Insertion of the flexor digitorum brevis

A

Middle phalanges of lateral 4 toes

221
Q

Innervation of flexor digitorum longus

A

Medial plantar nerve

222
Q

Action of flexor digitorum longus

A

Flexes toes 2-5 at MTP and PIP joints

223
Q

Origin of abductor digiti minimi

A

Lateral calcaneus and plantar aponeurosis

224
Q

Insertion of abductor digiti minimi

A

Proximal phalanx of 5th digit

225
Q

Innervation of abductor digiti minimi

A

Lateral plantar nerve

226
Q

Action of abductor digiti minimi

A

Abduct and flex little toe at MTP

227
Q

Origin of flexor digitorum longus tendon

A

Tibia

228
Q

Insertion of flexor digitorum longus tendon

A

Distal phalanx of lateral 4 digits

229
Q

Innervation of flexor digitorum longus tendon

A

Tibial nerve

230
Q

Action of flexor digitorum longus tendon

A

Flexion of digits 2-5 at MTP, PIP, and DIP joints

231
Q

Origin of flexor hallicus longus tendon

A

Fibula

232
Q

Insertion of flexor hallicus longus tendon

A

Distal phalanx of big toe

233
Q

Innervation of flexor hallicus longus tendon

A

Tibial nerve

234
Q

Action of flexor hallicus longus tendon

A

Flexion of hallux at MTP and IP joint

235
Q

Origin of quadratus plantae

A

Plantar surface of calcaneus

236
Q

Insertion of quadratus plantae

A

Tendon of the flexor digitorum longus

237
Q

Innervation of quadratus plantae

A

lateral plantar nerve

238
Q

Action of quadratus plantae

A

Redirect the line of pull of the tendons of the flexor digitorum longus

239
Q

Origin of lumbrical

A

Medial borders of tendons of the FDL

240
Q

Insertion of the lumbricals

A

Bases of proximal phalanx 2-5 and dorsal digital expansions

241
Q

Innervation of lumbricals

A

Medial one by the medial plantar nerve, lateral 3 by the lateral plantar nerve

242
Q

Action of lumbricals

A

Flexes the MTP and extends the PIP & DIP of the lateral 4 toes

243
Q

Origin of flexor hallucis brevis

A

Plantar surface of cuboid and lateral cuneiform

244
Q

Insertion of flexor hallicus brevis

A

Medial and lateral proximal phalanx of the big toe. (sesamoid in the tendons)

245
Q

Innervation of flexor hallicus brevis

A

Medial plantar nerve

246
Q

Action of flexor hallicus brevis

A

Flexes the great toe

247
Q

Origin of the flexor digiti minimi

A

Base of the 5th metatarsal

248
Q

Insertion of the flexor digiti minimi

A

Proximal phalanx of the 5th toe

249
Q

Action of the flexor digiti minimi

A

Flex the little toe

250
Q

Origin of the adductor hallucis (oblique head)

A

Base of the 2nd, 3rd, and 4th metatarsals

251
Q

Origin of adductor hallicus (transverse head)

A

Plantar ligaments of the lateral 4 MTP joints

252
Q

Insertion of adductor hallicus

A

Lateral base proxiaml phalanx of hallux

253
Q

Innervation of adductor hallicus

A

Lateral plantar nerve

254
Q

Action of adductor hallucis

A

Addicts the great toe, assists in maintaining the transverse arch of the foot

255
Q

Origin of the plantar interossei

A

Medial sides of the 3rd, 4th, and 5th metatarsals

256
Q

Insertion of the plantar interossei

A

Medial sides of the proximal phalanges of the 3rd, 4th, and 5th digits and extensor expansions

257
Q

Innervation of the plantar interossei

A

Lateral plantar nerve

258
Q

Action of plantar interossei

A

Adduct to the line of the 2nd toe

259
Q

Origin of dorsal interossei

A

Adjacent sides of the 2 metatarsals

260
Q

Insertion of the dorsal interossei

A 
#1 to medial side of the 2nd digit
#2 to lateral side of the 2nd digit
#3 to lateral side of the 3rd digit
#4 to lateral side of the 4th digit
261
Q

Innervation of the dorsal interossei

A

Lateral plantar nerve

262
Q

Action of the dorsal interossei

A

Abducts from line of the 2nd toe

263
Q

Origin of serratus posterior superior

A

Ligamentum nuchae, spinous process of C7 through T3

264
Q

Insertion of serratus posterior superior

A

2nd to 5th ribs

265
Q

Innervation of serratus posterior superior

A

Ventral primary rami of 1st 3-4 thoracic nerves

266
Q

Action of serratus posterior superior

A

Elevates the superior 4 ribs to increase the size of the thorax

267
Q

Origin of the splenius capitis

A

Ligamentum nuchae and spinous of C7 to T3

268
Q

Insertion of the splenius capitis

A

Mastoid process, and occipital bone

269
Q

Innervation of the spenius capitis

A

Dorsal primary rami

270
Q

Action of the splenius capitis

A

Rotate the head and neck to the same side; neck and head extension

271
Q

Origin of splenius cervicis

A

Spinous processes of T3 to T6

272
Q

Insertion of splenius cervicis

A

Transverse processes of C1 to C4

273
Q

Innervation of splenius cervicis

A

Dorsal primary rami

274
Q

Action of splenius cervicis

A

Rotate the head and neck to the same side; extend head and neck

275
Q

Origin of spinalis

A

Spinous processes of T11-L2

276
Q

Insertion of spinalis

A

Spinous process of the upper 4 -8 thoracic vertebrae

277
Q

Action of spinalis

A

Extensors of the vertebral column

278
Q

Action of semispinalis

A

Semispinalis capitis bilaterally extends the head, and unilaterally rotates the head to the same side

279
Q

Innervation of the semispinalis

A

Dorsal rami of the cervical spinal nerves

280
Q

Origin of multifidus

A

Vertebral arches

281
Q

Insertion of multifidus

A

Spinous processes spanning 1 to 3 vertebrae

282
Q

Action of the multifidus

A

Unilaterally: flexes the trunk laterally, rotates vertebra to the opposite side.

Bilaterally: Extends the trunk

283
Q

Origin of rotatores

A

The transverse process of 1 vertebrae

284
Q

Insertion of the rotatores

A

The base of the spinous process of the superior vertebrae

285
Q

Innervation of the rotatores

A

Dorsal rami of spinal nerves

286
Q

Action of the rotatores

A

Rotation of the superior vertebrae to the other side

287
Q

Origin of the internal abdominal oblique

A

Thoracolumbar fascia, anterior iliac crest, lateral half of inguinal ligament

288
Q

Insertion of internal abdominal oblique

A

Linea alba, pubic crest, ribs 10-12 inferior surface

289
Q

Innervation of internal abdominal oblique

A

Lower 5 thoracic nerves, subcostal, iliohypogastric

290
Q

Action of internal abdominal oblique

A

Flex and rotate the trunk, laterally rotate the trunk, compress abdominal contents

291
Q

Origin of rectus abdominis

A

Pubic symphysis, pubic crest

292
Q

Insertion of rectus abdominis

A

Xiphoid process, 5th and 7th costal cartilages

293
Q

Innervation of rectus abdominis

A

Lower 5 thoracic nerves, subcostal, iliohypogastric

294
Q

Action of rectus abdominis

A

Flex the trunk and tense anterior abdominal wall

Anatomy (9 decks)

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