2. Compare lymph and water with reference to density, color, and complexity of composition.
3. Compare lymph and blood with reference to color, composition, and movement through the body.
4. Show how blood pressure in the capillaries causes a flow of the lymph.
5. Show how contracting muscles cause the lymph to move. Compare with the effect of muscular contraction upon the blood in the veins.
6. Trace the lymph in its flow from the right hand to where it enters the blood; from the feet to where it enters the blood.
7. What conditions prevail at the cells to cause a movement of food and oxygen in one direction and of waste materials in the opposite direction?
8. What part does water play in the exchanges at the cells?
9. Show that the blood and the lymph together fulfill all the requirements of a nutrient cell fluid in the body.