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Blood is a body fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells. Invertebrates, it is composed of blood cells suspended in blood.
Blood carries carbon dioxide and other waste materials to the lungs, kidneys, and digestive system to be removed from the body. ... Blood is made up of blood cells and plasma. ... Red blood cells: Red blood cells (RBCs, also called erythrocytes; say: it-RITH-ruh-sites) are shaped like
Blood is a body fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells. In vertebrates, it is composed of blood cells suspended in blood plasma