Health, pathology and disease;allergy, disorders of ecology;infection, disorders of susceptibility;skin, disorders of protection;bone, disorders of support;joints, disorders of stability;muscles & tendons, disorders of movement;blood, disorders of transport;heart, disorders of propulsion;vessels, disorders of perfusion;lungs, disorders of breathing;mouth & stomach, disorders of digestion;intestines, disorders of absorption;liver, disorders of manufacture and destruction;kidneys, disorders of execretion;hormones, disorders of control;brain, disorders of communication;nerves, disorders of feeling and movement;eyes, disorders of vision;ears, disorders of hearing & balance.