posted by Linda .
When comparing the flow of lymph in the lymphatic system with the flow of blood in
the circulatory system, it can be said that the lymphatic system also
A. uses a pump.
B. contains fluid that travels in only one direction.
C. uses valves to prevent backward flow.
D. contains fluid that travels in a closed circuit.
I really think this is C. Uses valves to prevent backward flow
Jackie, Penny, Linda, or whoever --
1. Go to http://www.google.com
2. Type in flow of lymph blood system (or whatever search terms you need).
3. Press the Enter key.
4. Read different search results until you find what you need.
5. Re-search with different search terms if you don't find all you need.