Letter A

Arteriole

4 views

A small branch of an artery (a vessel that carries blood high in oxygen away from the heart to the body) leading to a capillary.

The oxygenated hemoglobin (oxyhemoglobin) makes the blood in arteries and arterioles look bright red.

Share this definition

Medical disclaimer

The information on this page is for educational and informational purposes only and does not constitute medical advice in any way.

  • It does not replace the advice of a physician, pharmacist or other healthcare professional.
  • It does not represent a prescription of drugs, diagnostic exams or therapies.
  • In case of symptoms, doubts or concerns about your health, always consult a qualified physician.

In case of emergency call 911 (US) or 112 (EU).