Blood is a liquid connective tissue made up of blood cells and plasma that circulate inside the blood vessels under the pumping action of the heart. In the case of human blood , we can say it is red-colored body fluid circulating inside the blood vessels in order to transport the gases (oxygen and carbon dioxide), nutrients, hormones, and other essential chemical components to every body cell and metabolic wastes from every cell to the excretory organs. Simply, blood is a means of ... Learn about the main components of blood : plasma, red blood cells, white blood cells, and platelets. Find out their functions, disorders, and how they interact with each other. Blood is a fluid that transports oxygen and nutrients to cells and carries away carbon dioxide and other waste products. It contains specialized cells that serve particular functions. These cells are suspended in a liquid matrix known as plasma.
