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Internal Oblique

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Origin

  • Anterior 2/3 of Iliac Crest
  • Iliopectineal arch
  • Thoracolumbar fascia

Insertion

  • Ribs 10-12 (inferior borders)
  • Linea Alba
  • Pubic Crest
  • Pectin Pubis (via conjoint tendon)

Actions

  • Bilateral contraction - Trunk flexion, expiration
  • Unilateral contraction - Trunk lateral flexion (ipsilateral) and rotation (ipsilateral)

Vascular Supply

  • Posterior Intercostal Arteries
  • Subcostal Arteries
  • Superior and Inferior Epigastric Arteries
  • Superficial and Deep Circumflex Arteries
  • Posterior Lumbar Arteries

Nerve

  • Intercostal Nerves (T7-T11)
  • Subcostal Nerve (T12)
  • Iliohypogastric Nerve (L1)
  • Ilioinguinal Nerve (L1)

Clinical Significance


See Also


References


Created by:
Chris Hauglid on 27 June 2020 20:40:35
Authors:
Last edited:
27 June 2020 20:40:35
Category: