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Bassett Collection of Stereoscopic Images of Human Anatomy

Dissection of anterolateral abdominal wall

Internal oblique muscle, left lateral view

Image #134-1

KEYWORDS: Muscles and tendons.

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Dissection of anterolateral abdominal wall
Internal oblique muscle, left lateral view
The origins of the internal oblique from the iliac crest(6) and thoracolumbar fascia (14) are visible in this preparation. The external oblique muscle has been resected and the fascia which lay between it and the internal oblique has been removed.
  1. Latissimus dorsi muscle (costal origin)
  2. External intercostal muscle
  3. External oblique muscle (costal origins)
  4. Internal oblique muscle
  5. Thoracic nerve XII (subcostal nerve)
  6. Iliac crest
  7. External oblique muscle (insertion)
  8. Gluteus medius muscle
  9. Costal cartilage XI
  10. Serratus posterior inferior muscle
  11. Costal cartilage XII
  12. Intercostal nerve XI
  13. Branch of thoracic nerve XII
  14. Thoracolumbar fascia (lower pointer indicates area of origin of internal oblique muscle from this fascia)
  15. Superior cluneal nerves
  16. Gluteus maximus muscle