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35 Cards in this Set
- Front
- Back
External abdominal oblique origin
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external surfaces of 5th-12th ribs
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External abdominal oblique insertion
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linea alba
pubic tubercle anterior half of iliac crest |
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External abdominal oblique innervation
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motor fibers in T7-T12 and the iliohypogastric nerve
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External abdominal oblique action
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compresses and supports abdominal viscera;
flexes and rotates trunk |
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Internal abdominal oblique origin
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thoracolumbar fascia
anterior two thirds of iliac crest connective tissue deep to lateral 1/3 of inguinal ligament |
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Internal abdominal oblique insertion
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inferior borders of 10-12th ribs
linea alba pecten pubis via conjoint tendon |
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Internal abdominal oblique innervation
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motor fibers in T7-T12;
iliohypogastric nerve; ilioinguinal nerve |
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Internal abdominal oblique action
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compresses and supports abdominal viscera; flexes and rotates trunk
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Transversus abdominis origin
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internal surfaces of 7-12 costal cartilages
thoracolumbar fascia iliac crest connective tissue deep to 1/3 of inguinal ligament |
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Transversus abdominis insertion
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linea alba with aponeurosis of internal oblique
pubic crest pecten pubis via conjoint tendon |
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Transversus abdominis innervation
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motor fibers in T7-T12
iliohypogastric nerve ilioinguinal nerve |
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Transversus abdominis action
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compresses and supports abdominal vescera
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Rectus abdominis origin
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pubic symphysis & pubic crest
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Rectus abdominis insertion
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xiphoid process and 5th-7th costal cartilages
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Rectus abdominis innervation
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T7-T11 and subcostal nerve
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Rectus abdominis action
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flexes trunk
compresses abdominal viscera stabilizes and controls tilt of pelvis (antilordosis) |
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pyramidalis origin
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pubic crest
(anterior surface of pubis & ant. pubic ligament) |
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pyramidalis insertion
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linea alba
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pyramidalis innervation
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subcostal N
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pyramidalis action
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assists rectus abdominis muscle in flexion of vertebral column
draws down linea alba |
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psoas major origin
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transverse processes of lumbar vertebrae;
sides of bodies of T12-L5 vertebrae and intervening intervertebral discs |
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psoas major insertion
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by a strong tendon to lesser trochanter of femur
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psoas major innervation
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L2-L4
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psoas major action
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flexes thigh and vertebral column
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psoas minor origin/insertion
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(merges with iliacus inferiorly to form iliopsoas muscle)
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psoas minor innervation
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L1
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psoas minor action
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flexes the vertebral column
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iliacus origin
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superior 2/3 of iliac fossa, ala of sacrum, and anterior sacro-iliac ligaments
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iliacus insertion
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lesser trochanter of femur and shaft of inferior to it, and to psaos major tendon
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iliacus innervation
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femoral N
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iliacus action
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flexes the thigh
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quadratus lumborum origin
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medial half of inferior border of 12th ribs and tips of lumbar transverse processes
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quadratus lumborum insertion
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iliolumbar ligament and internal lip of iliac crest
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quadratus lumborum innervation
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T12-L4
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quadratus lumborum action
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stabilizes the 12th rib, extends the vertebral column, bends lumbar spine laterally
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