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Posterior Intercostal Artery : How To Remember Easily ?

  • P – “Passes” through the intercostal spaces
  • O – “Originates” from the thoracic aorta
  • S – “Supplies” the posterior chest wall
  • T – “Travels” along the ribs
  • E – “Enters” the intercostal space below the corresponding rib
  • R – “Runs” posteriorly within the intercostal space
  • I – “Inferior” intercostal arteries anastomose with it
  • O – “Often” branches into the collateral circulation
  • R – “Receives” blood from the aorta
  • A – “Anastomoses” with the anterior intercostal artery
  • R – “Returns” blood to the aorta
  • T – “Transports” oxygenated blood to the posterior chest wall
  • E – “Ensures” adequate blood supply to the thoracic region
  • R – “Regulates” blood flow to the intercostal spaces
  • Y – “Yields” important branches for the ribs and muscles


Dr. Arin Nandi

Passionate About Medical Science & Helping Future Doctors Achieve Top Ranks In Medical Exams. He is professionally a dentist as well as a public health expert from JIPMER (1), (2)working in health department