According to the textbook, skeletal muscles are closely associated with the skeletal components of the body and are primarily involved in locomotory actions and changes of body postures . Biceps are voluntary skeletal muscles attached to bones. Smooth (visceral) muscles are located in the inner walls of hollow visceral organs (like the alimentary canal), not in the toes, and are involuntary . The nose tip consists primarily of cartilage, not involuntary muscle tissue.