Internal Oblique Muscle Flashcards

Flashcards are a great way to memorise information about the internal oblique muscle. Test your knowledge of anatomy using the internal oblique flashcards below.

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Thoracolumbar fascia, iliac crest, inguinal ligament

internal oblique origins


Inferior margins 10th-12th ribs and adjacent costal cartilages, linea alba, pectineal line

internal oblique insertions


  • Lateral flexion of the torso
  • Rotation of the torso
  • Flexion of the torso
  • Can help increase intraabdominal pressure


  • Anterior rami of intercostal nerves (T7-T11)
  • Subcostal nerve (T12)
  • Iliohypogastric nerve (L1)
  • Ilioinguinal nerve (L1)

Blood Supply

  • Lower posterior intercostal arteries and subcostal arteries
  • Superior and inferior epigastric arteries
  • Superficial and deep circumflex arteries
  • Posterior lumbar arteries
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Would you like to learn more about the internal oblique muscle? Then check out the internal oblique muscle article and video by clicking the link below:
Internal Oblique Muscle Anatomy

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