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What is blood and why is it needed?

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Anonymous

13y ago
Updated: 8/20/2019

Blood is a body fluid that all animals need in their bodies. Blood itself is made up of blood cells in liquid blood plasma. The plasma also contains platelets that prevent severe bleeding by clotting the artery or vein where bleeding is occurring.

Blood is needed for the transport of oxygen throughout the body using hemoglobin in the red blood cells as well as the pathway for plasma B cells (originating from white blood cells) in the immune system which transports needed antibodies throughout the body to attack antigens.

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Wiki User

13y ago

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