Vessels with extremely thin walls over wich molecules and atoms are transported are called "capillaries".
This is called an aneurysm.
Veins are the type of blood vessel that drains blood from tissues and returns it to the heart.
A blood vessel that forms a new pathway to bypass a blocked or damaged vessel is called a collateral circulation, or collateral blood flow. This natural process helps ensure adequate blood supply to tissues in the presence of arterial obstruction.
Yes, an artery is a type of blood vessel that carries oxygen-rich blood away from the heart to the rest of the body.
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Arteries
artery
capillary
It's called blood vessel. it can be of following type viz Artery, Vein, Arteriole, Venule, Capillary.
isn't it your heart. = )
Pulmonary veins.
Veins