and carbohydrates during absorption?

6. What double purpose is served by the processes of digestion?

7. Trace the passage of proteids, fats, and carbohydrates from the small
intestine into the general circulation.

8. What is the necessity for storing nutrients in the body? Why is it not
also necessary to store up oxygen?

9. In what form and at what places is each of the principal nutrients
stored?

10. How is the rate of supply of food to the cells regulated? Why is the
body unable to regulate the supply of alcohol to the cells when this
substance is taken?

11. Explain Fig. 80, page 181. What becomes of the alcohol if this is
taken in any but very small quantities?

12. State the general purpose of enzymes in the body. Name the enzymes
found in each of the digestive fluids. What ones are found in the tissues?



PRACTICAL WORK


Illustrate the ordinary meaning of the term "absorption" by bringing the
end of a piece of crayon in contact with water, or a piece of blotting