blood Image and Videos

Blood stock images and videos for download. 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.

Blood is made from red blood cells. These cells contain a protein called hemoglobin which carries oxygen from the lungs to all parts of the body. Red blood cells are made in the bone marrow and live for about 120 days before they die.