Explain how TWO (2) different structural features can be used to discriminate between the three types of muscles. (2 marks) Solution Three types of muscles found in the human body are: 1)Skeletal muscle 2)Smooth 3)Cardiac FUNCTION OF MUSCLES: 1)Regulate organs 2)Help us to move and maintain posture FUNCTIONS OF SKELETAL MUSCLE TISSUE FUNCTIONS OF CARDIAC MUSCLE Pumping of blood through the heart: Alternate contraction and relaxation of cardiac muscle pumps FUNCTIONS OF SMOOTH MUSCLE TISSUE Smooth muscle also contributes to moving fluids through the body and to the elimination of indigestible matter from the gastrointestinal system.