APPENDIX V 197 



H. (Optional.) Additional Topics in Human Biology. 



1. The skin: characteristics; uses; layers; glands; impor- 



tance of bathing; kinds of baths; care of the hair; care 

 of the nails ; treatment of burns ; clothing ; effect of alcohol 

 on body temperature. 



2. The skeleton : necessity for the skeleton ; skeleton of the neck 



and trunk ; skeleton of the arms and legs ; skeleton of the 

 head ; joints ; food and the skeleton ; effect of pressure on 

 the bonesi; fractures; dislocations; sprains. 



3. The muscles : importance of muscle tissue ; kinds of muscle ; 



conditions necessary for healthy muscles (food, fresh air, 

 exercise, rest) ; relation of muscles to posture. 



4. The nervous system: the body as a collection of organs; 



cooperation of the organs; functions of the nervous sys- 

 tem; parts of the nervous system; cellular structure of 

 the nervous system; nerve impulses; reflex, conscious, 

 and habitual activities ; importance of habit ; conditions 

 necessary for a healthy nervous system (food, fresh air, 

 varied activity, rest) ; effect of alcohol on the nervous 

 system. 



5. The eyes: protection for the eyes; structure of the eye; 



the eye as a camera ; sensations of sight ; defective eyes ; 

 hygiene of the eyes. ' 



6. The ears: the external ear; the middle ear; sensations of 



sound. 

 I. (Optional.) The Lives and Works of Gbeat Biologists. 



