184 APPLIED PHYSIOLOGY 



2. Describe the capillaries, their structure, and action in 



regard to nutrition and respiration. 



3. Describe the veins, their structure and action. 



4. Describe the pulmonary circulation and the portal cir- 



culation. 



5. Give the time required for a drop of blood to make the 



complete round of the circulation. 



6. Describe the lymph, the lymphatics, the flow of lymph, 



and the use of lymph. 



7. Describe lymph nodes and give their use. 



8. Describe the circulation in reptiles and toads, in fishes, 



in insects, in shellfish, in the ameba. 



9. Give an outline of ancient ideas concerning the circula- 



tion of the blood, and tell when and by whom the 

 true circulation was discovered. 



