So anytime we want to basically consciously control our movement, and we can, this is our skeletal muscle that is involved. Now, skeletal muscle is not the only type of muscle that is found in the body. We also have cardiac muscle found in the heart. And we have smooth muscle, for example, found lining our blood vessels. Now, cardiac and smooth muscle is controlled by the autonomic nervous system and the smallest unit of the cardiac muscle and the skeletal muscle is known as the sarcomere. Smooth muscle does not consist of the sarcommir.