Biology, Chapter 20 (Part 2)

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Across
  1. 3. The ____________ system delivers nutrients throughout the body (p. 399
  2. 4. The organ that makes B cells (p. 406)
  3. 6. The ____________ system eliminates waste and maintains water balance (p. 399)
  4. 9. Unlike T or B cells, _________________will attack and engulf a variety of foreign particles. (p. 407)
  5. 11. The only layer of the integumentary system not made of epithelial tissue is the __________________layer. (p. 401)
  6. 14. The ____________ system secretes hormones to control and regulate the body (p. 399)
  7. 16. The ____________ system exchanges gases between blood and air (p. 399)
Down
  1. 1. By studying how the immune system works, doctors have developed a process for lessening a patient's reaction to allergens, a process known as _______________ (p. 395)
  2. 2. Bone, blood, lymph, fat, and cartilage are all examples of ____________ tissue. (p. 396)
  3. 4. In order to prevent the immune system from attacking the body's own tissues, helper T cells activate ___________________ __ cells following an infection. (p. 407)
  4. 5. A group of cells that serve as a collecting point for lymph (p. 406)
  5. 7. The ____________ system controls movement and processes sensory information (p. 399)
  6. 8. The entry point where lymph rejoins the bloodstream (p. 406)
  7. 10. The gland where T cells mature (p. 406)
  8. 12. The ____________ system supports and protects the body (p. 398)
  9. 13. The ____________ system provides the outer covering of the body (p. 398)
  10. 15. A clear fluid that transports antigen-fighting cells (p. 406)