Circulation, Heart, Control of the Blood Flow, Carriage of oxygen, Carbon Dioxide, Respiration, Metabolism, Nutrition, Body Fluids, Nerve, Urine.
Physical Nuture, chemical composition, Chemistry of Nitrogen Fixation, Digestion, Oxidative, Metabolism, Organs, Tissue,Inhibition, Nerve
The nature and uses of food, the use of water by living organisms, the special constituents of the food, the action of ions in physiologieal processes, the propation of the impulse, the production of light by living organisms