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Blood: Difference between revisions
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[[Blood]] is a body fluid that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells.Two types of blood vessels carry blood throughout our bodies: | |||
* Arteries carry oxygenated blood (blood that has received oxygen from the lungs) from the heart to the rest of the body. | |||
* Blood then travels through veins back to the heart and lungs, so it can get more oxygen to send back to the body via the arteries. | |||
As the heart beats, you can feel blood traveling through the body at pulse points — like the neck and the wrist — where large, blood-filled arteries run close to the surface of the skin. | |||
The blood that flows through this network of veins and arteries is whole blood, which contains three types of blood cells: | |||
* red blood cells (RBCs) | |||
* white blood cells (WBCs) | |||
* platelets<ref>[https://en.wikipedia.org/wiki/Blood Blood]</ref> | |||
==Functions== | ==Functions== | ||
Blood performs many important functions within the body including: | Blood performs many important functions within the body including: | ||