Definitions

1. noun

A small blood vessel that is a branch of a capillary artery, supplying a capillary network.

“The arteriole had a significant impact on the overall circulation in the patient’s body.”

2. noun

A small artery, especially one that branches from a capillary artery and supplies a capillary network.

“The arterioles played a crucial role in the regulation of blood flow in the heart.”