Ambient temperature is the term used to identify the surrounding or environmental temperature. It is the nature and tendency of all things to approach ambient temperature. If you are in a room, then the ambient temperature is the room temperature.
An arteriole is a small-diameter blood vessel in the microcirculation that extends and branches out from an artery and leads to capillaries. Arterioles have muscular walls and are the primary site of vascular resistance. The greatest change in blood pressure and velocity of blood flow occurs at the transition of arterioles to capillaries.
A blood vessel that carries blood away from the heart chambers, have muscular walls to regulate blood flow and are typically high-pressure vessles. Arterioles. Blood vessels that are smaller branches off of arteries. Called resistance vessels.