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Anatomy > Test 2 Muscles > Flashcards

Test 2 Muscles Flashcards

1
Q

External abdominis oblique nerve (2)

A

Lower 5 ICs and subcostal

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2
Q

External abdominis oblique origin

A

External surface of lower 8 ribs

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3
Q

External abdominis oblique insertion (2)

A

Anterior 1/2 of iliac crest and linea alba

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4
Q

External abdominis oblique action (3)

A

Compresses and supports abdominal viscera; rotates and flexes vertebral column

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5
Q

Internal abdominis oblique nerve (20

A

Lower 4 ICs, subcostal, and 1st lumbar nerves

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6
Q

Internal abdominis oblique insertion (3)

A

Cartilages of lower ribs, linea alba, and conjoined tendon

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7
Q

Internal abdominis oblique action (3)

A

Compresses and supports abdominal viscera, rotates and flexes vertebral column

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8
Q

Transversus abdominis nerve (3)

A

Lower 5 ICs, subcostal and 1st lumbar nerves

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9
Q

Transversus abdominis insertion (2)

A

Linea alba and conjoined tendon onto pubis

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10
Q

Transversus abdominis action

A

Compresses and supports abdominal viscera

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11
Q

Rectus abdominis nerve (2)

A

Lower 5 ICs and subcostal

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12
Q

Rectus abdominis origin (2)

A

Crest and symphysis of pubis

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13
Q

Rectus abdominis insertion (2)

A

Xiphoid process and 5-7th costal cartilages

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14
Q

Rectus abdominis actions (2)

A

Tenses abdominal wall and flexes vertebral column

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15
Q

Quadratus lumborum nerve (2)

A

Subcostal and upper lumbar nns

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16
Q

Quadratus lumborum insertion (2)

A

Lower border of 12th rib and transverse processes of upper 4 lumbar vertebrae

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17
Q

Quadratus lumborum action (2)

A

Draws last rib toward pelvis and flexes vertebral column laterally

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18
Q

Iliacus nerve

A

Femoral n.

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19
Q

Iliacus Origin (2)

A

Iliac fossa and lateral portion of sacrum

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20
Q

Iliacus Insertion

A

Lesser trochanter of femur

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21
Q

Iliacus Action

A

Flexes thigh

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22
Q

Psoas major nerve

A

Ventral rami of L2-4

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23
Q

Psoas major origin

A

Vertebral discs and transverse processes (T12-L5)

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24
Q

Psoas major insertion

A

Lesser trochanter of femur

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25
Q

Psoas major action (2)

A

Flexes thigh and vertebral column

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26
Q

Psoas minor nerve

A

1st lumbar nerve

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27
Q

Psoas minor origin

A

Bodies and discs of T12/L1

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28
Q

Psoas minor insertion (2)

A

Pectineal line and iliopectineal eminence of pelvis

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29
Q

Psoas minor action

A

Flexes vertebral column

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30
Q

Diaphragm nerve

A

Phrenic

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31
Q

Diaphragm insertion

A

Central tendon

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32
Q

Ischiocavernosus nerve

A

Perineal branch of pudendal n.

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33
Q

Ischiocavernosus origin

A

Pelvic surface of inferior ramus of ischium surrounding crus

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34
Q

Ischiocavernosus insertion

A

Crus near pubic symphysis

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35
Q

Ischiocavernosus action

A

Maintains erection by compression of crus

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36
Q

Bulbospongiosus nerve

A

Perineal branch of pudendal nerve

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37
Q

Bulbospongiosus insertion (male, 2)

A

Corpus cavernosum and root of penis

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38
Q

Bulbospongiosus insertion (female, 2)

A

Dorsum of clitoris and superficial layer of urogenital diaphragm between crura of clitoris

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39
Q

Bulbiospongiosus action (male, 2)

A

Compresses bulb, possibly acts in erection

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40
Q

Bulbiospongiosus action (female, 2)

A

Compresses bulb and vaginal orifice

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41
Q

Superficial transverse perineal nerve

A

Perineal branch of pudendal nerve

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42
Q

Superficial transverse perineal origin

A

Ramus of ischium near tuberosity

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43
Q

Superficial transverse perineal insertion

A

Central body of perineum

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44
Q

Superficial transverse perineal action

A

Supports central body of perineum

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45
Q

Sphincter urethrae nerve

A

Perineal branch of pudendal nerve

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46
Q

Sphincter urethrae origin

A

Inferior ramus of ischium

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47
Q

Sphincter urethrae action

A

Closes and compresses urethra

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48
Q

Deep transverse perineal nerve

A

Perineal branch of pudendal nerve

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49
Q

Deep transverse perineal origin

A

Internal aspect of inferior ramus of ischium

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50
Q

Deep transverse perineal insertion (2)

A

Median raphe and central tendon of perineum

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51
Q

Deep transverse perineal action

A

Fixes central body of perineum

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52
Q

External anal sphincter nerve

A

Inferior rectal nerve

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53
Q

External anal sphincter origin (3)

A

Skin, fascia, and tip of coccyx

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54
Q

External anal sphincter insertion

A

Central tendon of perineum

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55
Q

External anal sphincter action

A

Closes anus

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56
Q

Obturator internus nerve

A

Nerve to obturator internus

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57
Q

Obturator internus origin

A

Pelvic surface of obturator membrane/surrounding bone

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58
Q

Obturator internus insertion

A

Greater trochanter of femur

59
Q

Obturator internus action (2)

A

Abducts and rotates thigh laterally

60
Q

Piriformis nerve

A

Sacral branches S1-2

61
Q

Piriformis origin (2)

A

Anterior surface of sacrum and sacrotuberous ligament

62
Q

Piriformis insertion

A

Superior border of greater trochanter

63
Q

Piriformis action (2)

A

Rotates thigh laterally and abducts flexed thigh

64
Q

Levator ani nerve

A

Branches from S4

65
Q

Levator ani insertion (5)

A

Walls of urethra, vagina, anal canal, anococcygeal ligament and coccys

66
Q

Levator ani action

A

Supports pelvic contents for abdominal pressure

67
Q

Coccygeus nerve

A

Branches from S4/S5

68
Q

Coccygeus origin

A

Ischial spine

69
Q

Coccygeus insertion (2)

A

Lower sacrum and coccyx

70
Q

Coccygeus action

A

Supports pelvic contents for abdominal pressure

71
Q

Gluteus maximus nerve

A

Inferior gluteal n.

72
Q

Gluteus maximus insertion (2)

A

Gluteal tuberosity, iliotibial tract

73
Q

Gluteus maximus action (2)

A

Chief extensor of thigh, lateral rotator of hip

74
Q

Gluteus medius nerve

A

Superior gluteal n.

75
Q

Gluteus medius and minimus origin

A

Ilium bw ant. and post. gluteal lines

76
Q

Gluteus medius insertion

A

Lateral surface of greater trochanter

77
Q

Gluteus medius action

A

Abducts hip

78
Q

Gluteus minimus nerve

A

Superior gluteal

79
Q

Gluteus minimus insertion

A

Greater trochanter

80
Q

Gluteus minimus action (2)

A

Abducts thigh and rotates thigh medially

81
Q

Superior gemellus nerve

A

Nerve to obturator internus

82
Q

Superior gemellus origin

A

Ischial spine

83
Q

Superior gemellus insertion

A

Medial surface of greater trochanter

84
Q

Superior gemellus action (2)

A

Abducts and rotates thigh laterally

85
Q

Inferior gemellus nerve

A

Nerve to quadratus femoris

86
Q

Inferior gemellus origin

A

Ischial tuberosity

87
Q

Inferior gemellus Insertion

A

Medial surface of greater trochanter

88
Q

Inferior gemellus action (2)

A

Abducts and rotates thigh laterally

89
Q

Quadratus femoris nerve

A

Nerve to quadratus femoris

90
Q

Quadratus femoris origin

A

Lateral border of ischial tuberosity

91
Q

Quadratus femoris insertion

A

Quadrate tubercle on intertrochanteric crest

92
Q

Quadratus femoris action (2)

A

Rotates thigh laterally, steadies head in acetabulum

93
Q

Pectineus nerve

A

Femoral n.

94
Q

Pectineus origin

A

Pectineal line on superior ramus of pubis

95
Q

Pectineus insertion

A

Pectineal line on femur

96
Q

Pectineus action (2)

A

Adducts and flexes thigh

97
Q

Tensor fasciae lata nerve

A

Superior gluteal

98
Q

Tensor fasciae lata origin (2)

A

Iliac crest and anterior superior iliac spine

99
Q

Tensor fasciae lata insertion

A

Iliotibial tract

100
Q

Tensor fasciae lata action (3)

A

Flexes, abducts, and rotates thigh medially

101
Q

Sartorius nerve

102
Q

Sartorius origin

A

Just below anterior superior iliac spine

103
Q

Sartorius insertion

A

Superior medial surface of tibia

104
Q

Sartorius action (3)

A

Flexes, abducts, and laterally rotates thigh

105
Q

Quadriceps nerve

106
Q

Rectus femoris origin (2)

A

Anterior inferior iliac spine and ilium superior to acetabulum

107
Q

Quadriceps insertion

A

Base of patella/patellar ligament to tibial tuberosity

108
Q

Quadriceps action (2)

A

Extends leg; rectus femoris also flexes thigh

109
Q

Vastus lateralis origin (2)

A

Greater trochanter and lateral lip of linea aspera

110
Q

Vastus medialis origin (2)

A

Intertrochanteric line, medial lip of linea aspera

111
Q

Vastus intermedius origin

A

Anterior and lateral surfaces of femur body

112
Q

Adductor brevis nerve

113
Q

Adductor brevis origin (2)

A

Body and inferior pubic ramis

114
Q

Adductor brevis insertion (2)

A

Pectineal line, proximal part of linea aspera

115
Q

Adductor brevis action

A

Adducts thigh

116
Q

Adductor longus nerve

117
Q

Adductor longus origin

A

Body of pubis inferior to pubic crest

118
Q

Adductor longus insertion

A

Middle 1/3 of linea aspera

119
Q

Adductor longus action

A

Adducts thigh

120
Q

Adductor magnus nerve (2)

A

Obturator and sciatic

121
Q

Adductor magnus origin (2)

A

Ischiopubic ramis; ischial tuberosity

122
Q

Adductor magnus insertion (3)

A

Linea aspera, medial supracondylar line, adductor tubercle

123
Q

Adductor magnus action (3)

A

Adducts, flexes, and extends thigh

124
Q

Gracilis nerve

125
Q

Gracilis origin (2)

A

Body and inferior pubic ramus

126
Q

Gracilis insertion

A

Superior part of medial surface of tibia

127
Q

Gracilis action (2)

A

Adducts thigh, flexes leg

128
Q

Obturator externus nerve

129
Q

Obturator externus origin (2)

A

Margin of obturator foramen and obturator membrane

130
Q

Obturator externus insertion

A

Intertrochanteric fossa of femur

131
Q

Obturator externus action (2)

A

Rotates thigh laterally, steadies femur in acetabulum

132
Q

Semitendinosus nerve

A

Tibial portion of sciatic

133
Q

Semitendinosus origin

A

Ischial tuberosity

134
Q

Semitendinosus insertion

A

Medial surface of superior part of tibia

135
Q

Semitendinosus action (3)

A

Extends thigh, flexes and rotates leg medially

136
Q

Semimembranosus nerve

A

Tibial portion of sciatic

137
Q

Semimembranosus origin

A

Ischial tuberosity

138
Q

Semimembranosus insertion

A

Posterior part of medial condyle of tibia

139
Q

Semimembranosus action (3)

A

Extends thigh, flexes and rotates leg medially

140
Q

Biceps femoris nerve (2)

A

Long head - tibial

Short head - common fibular

141
Q

Biceps femoris origin (1 and 2)

A

Long head - ischial tuberosity

Short head - linea aspera and lateral supracondylar line

142
Q

Biceps femoris insertion

A

Lateral side of head of fibula

143
Q

Biceps femoris action (3)

A

Extends thigh, flexes and rotates leg laterally

Anatomy (28 decks)

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