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Thoax OIANs
| Question | Answer |
|---|---|
| external intercostals oigin | lower border of a rib |
| external intercostals insertion | upper border of rib below |
| external intercostals action | elevate ribs during inspiration |
| external intercostals innervation | intercostal nerves |
| internal intercostals origin | inner surface of a rib and costal cartilages |
| internal intercostals insertion | upper borders of the adjacent ribs below |
| internal intercostals action | draw ribs down during forced expiration |
| internal intercostals innervation | intercostal nerves |
| transvers thoracis origin | inner surface of the lower 3rd of the body of the sternum and adjacent surfaces of the xiphoid process |
| transverse thoracic insertion | internal surfaces of the sternocostal joints associated with the 2nd (or 3rd) through 6th ribs |
| transverse thoracis action | depress ribs |
| transverse thoracis innervation | intercostal nerves |
| Quadratus lumborum origin | iliolumbar ligament and crest of the ilium |
| quadratus lumborum insertion | rib 12 and tips of transverse process of L1-L4 |
| quadratus lumborum action | extension and side flexion of L/S expiration |
| quadratus lumborum innervation | ventral ramus of spinal nerve rooots T12-L3 |
| Psoas major ORIGIN | Transverse processes and lateral bodies of the last thoracic and all lumbar vertebrae including the intervertebral discs |
| psoas major insertion | lesser trochanter of femur |
| psoas major action | forward flexion and side flexion of L/S flexion of the hip |
| psoas major innervation | brances of ventral rami L1-L3 |
| iliacus origin | superior 2/3 of the iliac fossa, inner lip of the iliac crest |
| iliacus insertion | lesser trochanter of the femur |
| iliacus action | flexion of the hip joint |
| iliacus innervation | femoral nerve |
| rectus abdominis origin | pubic crest and anterior pubic ligament |
| rectus abdominis insertion | on the front of the wall of the thorax, along a horizontal line passing laterally from the xiphoid process, and cutting in that order, the 7th, 6th, and 5th costal cartilages |
| rectus abdominis action | expiration flexion of the spine |
| rectus abdominis innervation | lower 6-7 thoracic nrves |
| external oblique origin | lateral side of ribs 4-12 |
| external oblique insertion | iliac crest, linea alba, and contralateral rectus sheaths |
| external oblique action | B/L: flexion of trunk and posterior tilt of pelvis U/L: lateral flexion and contralateral rotation |
| external oblique innervation | lower six thoracic nerves |
| internal oblique origin | iliac crest, inguinal ligament, and thoacolumbar fascia |
| internal oblique insertion | ribs 9-12, linea alba, and contralateral rectus sheaths |
| internal oblique action | B/L: flexion of trunk, posterior tilt of the pelvic U/L: lateral flexion and ipsilateral rotation of the trunk |
| internal oblique innervation | lower six thoracic nerves and the first lumbar nerve |
| transverse abdominis origin | iliac crest, thoracolumbar fascia, inner surface of cartilages of ribs 6-12 and the inguinal ligament |
| transverse abdominis insertion | linea alba |
| transverse abdominis action | B/L: stabilization of attachment sites for other abdominal muscles; compression of the abdominal cavity |
| transverse abdominis innervation | lower six thoracic nerves and the first lumbar nerve |
Created by:
ecosio
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