IPA: /ˌɑːr.təˈriː.oʊl/
KK: /ˈɑːrtəˌriːoʊl/
A small blood vessel that branches off from an artery and leads to capillaries.
The arterioles regulate blood flow to various tissues in the body.
Arteriole → It is formed from "arteria" (from Latin, meaning artery) and the diminutive suffix "-ole" (meaning small). The word "arteriole" refers to a small artery, indicating a smaller branch of the arterial system.
Think of an 'artery' being a large blood vessel, and the '-ole' means small, so an 'arteriole' is a small artery.