As we'll see in just a moment, myoglobin is used to store the oxygen, while the hemoglobin is actually used to bring the oxygen continually from the lungs and to the tissues of our body. And we'll see exactly why that is. So in just a moment. Now, in biochemistry, we use something called the oxygen binding curve, also known as the oxygen dissociation curve, to basically describe the properties of myoglobin and hemoglobin. And this is the graph shown on the board. So the blue curve basically describes the myoglobin oxygen binding curve, while the red curve describes the hemoglobin oxygen binding curve.