The best description for the two components of blood is formed elements and plasma.
Blood is a fluid that circulates through the vessels of the circulatory system by definition. Human blood consists of three components: platelets, red and white blood cells, and plasma, which is the liquid component. Plasma, which makes up the majority of blood, mostly consists of water with small amounts of proteins, ions, nutrients, and wastes. Carbon dioxide and oxygen are carried by red blood cells. It is the job of platelets to cause blood to clot. The immune system's white blood cells have a role in immunological response. About 45 percent of human blood is made up of cells and platelets, and the remaining 55 percent is plasma.
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