![]() | This article about biology may be excessively human-centric. |
Blood vessel | |
---|---|
![]() Diagram blood vessels | |
Details | |
System | Circulatory system |
Identifiers | |
Latin | vas sanguineum |
MeSH | D001808 |
TA98 | A12.0.00.001 |
TA2 | 3895 |
FMA | 63183 |
Anatomical terminology |
Blood vessels are the structures of the circulatory system that transport blood throughout the human body.[1] These vessels transport blood cells, nutrients, and oxygen to the tissues of the body. They also take waste and carbon dioxide away from the tissues. Blood vessels are needed to sustain life, because all of the body's tissues rely on their functionality.[2]
There are five types of blood vessels: the arteries, which carry the blood away from the heart; the arterioles; the capillaries, where the exchange of water and chemicals between the blood and the tissues occurs; the venules; and the veins, which carry blood from the capillaries back towards the heart.
The word vascular, meaning relating to the blood vessels, is derived from the Latin vas, meaning vessel. Some structures – such as cartilage, the epithelium, and the lens and cornea of the eye – do not contain blood vessels and are labeled avascular.
© MMXXIII Rich X Search. We shall prevail. All rights reserved. Rich X Search