Lymphatic System

3. Also known as Suppressor T cells
5. Modulate the functional activities of many other types of cells
7. Primarily attacks bacteria
9. Also known as stem cells
10. Attack invaders outside
11. Engulfs and absorbs bacteria and other small cells
13. Made from bone marrow and the thymus
15. Largest organ of the lymphatic system
17. Organ located above the inguinal area
18. Visible, round lumps in the back of the throat
20. Secrete product lymphokines that modulates the functional activities of other cells
21. Not visible, high in the throat & behind the nose

1. Directly terminates antigens
2. Consists of lymphatic pathways, lymph nodes, spleen, and tonsils.
4. The body's secondary circulation system
6. Attack invaders inside
8. Precipitate the production of antibodies by B cells and produce substances that activate other T cells
12. Main organ of the lymphatic system
14. Derived in the Thymus gland
16. Spongy tissue in your bones that makes blood cells
19. Bean shaped organs located throughout the lymphatic system