Now let's move on to the different types of skeletal muscle. So we have type one skeletal muscle we have type two A and we have type two B. Now let's begin by describing what distinguishes each one of these muscles from the other. So type one muscle basically contains a high concentration of myoglobin the special protein that carries oxygen in our muscles. Now myoglobin is similar to hemoglobin and that it carries the oxygen but it contains a different structure and myoglobin can only carry a single oxygen per myoglobin protein per myoglobin molecule. Now because our type one contains a high concentration of myoglobin it appears red under the microscope.