Serratus posteriors

The exercise was created 2025-08-15 by modigamodi. Question count: 10.

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  • Serratus posterior superior origin C7-T3 spinous process + Nuchal ligament
  • Serratus posterior superior insertion Ribs 2-5
  • Serratus posterior superior blood supply upper intercostal arteries
  • Serratus posterior superior innervation T1-4 ventral rami thoracic spinal nerves
  • Serratus posterior superior action elevates the ribs (inhalation)
  • Serratus posterior inferior origin T11-L2 spinous process
  • Serratus posterior inferior insertion ribs 9-12
  • Serratus posterior inferior blood supply subcostal artery + lower intercostal arteries
  • Serratus posterior inferior innervation intercostal nerves T9-T12 ventral rami
  • Serratus posterior inferior action depress the ribs, forced exhalation + stabilizes the lower ribs

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