External Oblique Muscle Flashcards

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

Press a flash card to reveal the answer.

Origin

External surfaces of the fifth to twelfth ribs

Insertion

Linea alba, iliac crest, pubic crest & pubic tubercle

Actions

  • Lateral flexion of the trunk (unilateral contraction)
  • Rotation of the trunk (unilateral contraction)
  • Flexion of the trunk (bilateral contraction)
  • Assistive in forced expiration

Innervation

  • Intercostal nerves (T8-T11)
  • Subcostal nerve (T12)

Blood Supply

  • Lower posterior intercostal artery
  • Subcostal artery
  • Deep circumflex iliac artery
  • Superior and inferior epigastric arteries

Would you like to learn more about the external oblique muscle? Then check out the external oblique muscle article and video by clicking the link below:
External Oblique Muscle Anatomy

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