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Transversus Abdominis

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Origin

  • Ribs 7-12 (internal surface of costal cartilage)
  • Thoracolumbar fascia
  • Iliac Cerst (anterior 2/3)
  • Iliopectineal arch

Insertion

  • Linea Alba
  • Internal abdominal oblique (aponeurosis)
  • Pubic Crest
  • Pectinal Line of Pubis

Actions

  • Bilateral contraction - Expiration
  • Unilateral contraction - Trunk 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 20:45:04
Authors:
Last edited:
27 June 2020 20:45:04
Category: