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Bassett Collection of Stereoscopic Images of Human Anatomy

Dissection of thoracic and lumbosacral regions of back from a posterior approach

Rotator, interspinal and intertransverse muscles in lumbar region

Image #214-5

KEYWORDS: Lumbar region, Muscles and tendons, Sacral region, Thoracic region, Vertebral column.

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Dissection of thoracic and lumbosacral regions of back from a posterior approach
Rotator, interspinal and intertransverse muscles in lumbar region
The erector spinae and multifidus muscles have been nearly completely excised from the lumbar region.
  1. Medial intertransverse muscle
  2. Lateral intertransverse muscle (several fascicles present)
  3. Dorsal branch thoracic nerve XII
  4. Rib XII
  5. Aponeurosis transversus abdominis muscle
  6. Thoracolumbar fascia (upper pointer, middle layer; lower pointer, posterior layer, cut off)
  7. Transversus abdominis muscle
  8. Quadratus lumborum muscle (covered by thoracolumbar fascia)
  9. Upper pointer: Longissimus muscle Lower pointer: Iliocostalis lumborum muscle
  10. Iliac crest
  11. Superior cluneal nerves
  12. Gluteus medius muscle
  13. Gluteus maximus muscle
  14. Posterior superior iliac spine
  15. Spinous process vertebra L. II
  16. Intervertebral joint capsule
  17. Interspinalis lumborum muscle
  18. Transverse process of vertebra L. IV
  19. Thoracolumbar fascia (posterior layer)
  20. Rotator muscles
  21. Spinous process vertebra L. V
  22. Upper pointer: Lamina (arch of vertebra) L. V Lower pointer: Intervertebral joint capsule L. V - S. I
  23. Arch sacrum