APPENDIX VI 205 



11. Hygiene of digestion: hygienic habits of eating; prevention 

 of disease ; the use of water as a drink ; effect of alcoholic 

 drinks on the organs of digestion. 



F. CIRCULATION OF THE NUTRIENTS. 



1. Blood: structure of corpuscles; composition of plasma; 



hygiene of plasma. 



2. Circulation : definition ; necessity for ; organs of circulation, 



definition of each. 



3. Heart: position, size, shape; chambers, position and struc- 



ture of each ; valves ; action of heart. 



4. Blood vessels: position and structure of arteries; variations 



in pulse rate ; valves in arteries ; position, importance, and 

 structure of capillaries : position and structure of veins. 



5. Course of the blood through the body : changes in the composi- 



tion .of the blood. 



6. Hygiene of the circulation: effect of exercise on the heart and 



blood vessels ; stopping of blood flow in wounds. 



G. RESPIRATION AND THE PRODUCTION OF ENERGY IN MAN. 



1. Necessity for respiration: proofs of oxidation in the human 



body ; examples of energy in the human body ; transfor- 

 mations of energy ; respiration in plants, in animals, and in 

 man. 



2. Adaptations for securing oxygen and for excreting carbon dioxid: 



course taken by the air ; nose cavity ; throat and larynx ; 

 lining of the air passages; the lungs, their structure and 

 blood supply ; function of red corpuscles ; change in color 

 of blood after mixing with oxygen ; hygiene of red corpus- 

 cles. 



3. The process of breathing: structure of the chest cavity; 



(optional) pleura; enlargement of chest cavity; how air 

 is taken into the lungs; breathing capacity of lungs; 

 expiration. 



4. Hygiene of respiratory organs: hygienic habits of breathing; 



effect of exercise on respiration; effect of tight clothing 

 upon respiration; diseases of respiratory organs; suffo- 

 cation; necessity of ventilation; methods of ventilation. 



