Vasodilation or dilation of the blood vessels is due to a decrease in vascular resistance. As a result of the dilation of blood vessels, blood flow increases. Mammals or warm blooded creatures use vasodilation to move warm blood closer to the surface of the skin where heat can be released. Vasodilation serves as a form of cooling in warm blooded animals.
When blood vessels dilate, their diameter increases, allowing more blood to flow through them. This can help regulate blood pressure, increase blood flow to tissues or organs, and assist with heat loss in the body. Dilation is controlled by various factors, including hormones, neurotransmitters, and local tissue factors.
This substance is called histamine.
In hot weather - blood vessels dilate (widen) - to allow the exchange of heat between the blood and sweat glands. The sweat evaporates - cooling the blood.
The vessels that carry oxygenated blood to all cells in the body are called arteries. Arteries are muscular blood vessels that transport oxygen-rich blood away from the heart to the rest of the body.
Acidic
When you are hot, your body increases blood flow to the skin's surface to release heat through sweat and evaporation. Sweat glands produce sweat, which helps regulate body temperature by cooling you down. Additionally, your blood vessels dilate to help dissipate heat.
veins
VEINS
The artery does
Capillaries.
they bring oxygen to the brain
cappilleries
the pulmonary veins
OK, by definition we have blood. Do you want to know what blood is made of?
atherosclerosis
There are 96 000 km
2
The Artery