Across
- 4. two types: Right and Thoracic
- 5. skin, mucous membrane, and lysozyme
- 8. bean shaped organ that removes pathogens and other foreign material
- 9. hormone produced by the thymus that promotes the development of lymphocytes
- 10. ___ spreads through the lymphatic system
Down
- 1. have thin walls and valves that carry fluid away from tissues
- 2. fist-size organ that stores blood and helps in immunity
- 3. lymphatic tissue masses in small intestine
- 6. organ in the back of the throat that contains white blood cells
- 7. contains liquid, lymphocytes, hormones, bacteria, and cellular debris; similar to plasma