What Organs Are in the Human Circulatory System?
Heart The heart is a vital organ that is responsible for pumping blood throughout the body. Not only is it an organ, but it is also considered a muscle, and it is about as big as your fist. In order for the human body to live, the heart must beat at all times, and a healthy heart beats between 60 to 120 times per minute, making an estimated three billion beats in a lifetime. Eating a healthy diet and living an active lifestyle is important in assuring proper heart health to prevent heart attacks and other coronary complications. Blood Your blood is a vital substance that flows through your body. It is pumped continuously by the heart and contains white blood cells, red blood cells, platelets and plasma, which is the liquid part of the blood. Red blood cells are responsible for transporting carbon dioxide and oxygen through the body. There are an estimated five million red blood cells per one drop of blood, so the human body contains countless amounts of these cells. White blood cells a
