Anatomy Chapter 12

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Across
  1. 3. a soft, blood rich organ that filters blood
  2. 4. functions at peak levels only during youth
  3. 5. abnormally vigorous immune responses in which the imune system causes tissue damage
  4. 6. tissue grafts donated by a genetically identical person
  5. 8. process causes clumping of the foreign cells
  6. 9. collections of lymphocytes
  7. 11. chemicals that act indirectly to rid the body of antigens
Down
  1. 1. mixture of dead or dying neutrophils
  2. 2. occurs when antibodies bind to specific sites on bacterial exotoxins
  3. 7. small masses of lymphnoid tissue that ring the pharynx
  4. 8. a tubelike offshoot of the first part of the large intestine
  5. 10. an enzyme that destroys bacteria