Definition: Arteriae are small blood vessels that feed blood into a vessel, forming a network. The specific term depends on where they're located within the body. They can be found in any part of the body; usually in the lungs, heart, arteries, veins, and connective tissues such as the skin and muscles. Definition: Arteriae are small, flexible blood vessels that branch off from larger blood vessels to nourish blood flow to smaller blood vessels, supporting vital organs. They play a crucial role in regulating blood pressure and transporting nutrients throughout the body.