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Thoax OIANs

QuestionAnswer
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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