Chapter 9: Science | Crossword

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Across
  1. 1. state of internal balance achieved by adjusting the physiological systems of the body
  2. 4. ability to resist pathogens
  3. 5. the study of the function of the body
  4. 7. tough bands of fibrous tissue that connect bone to bone
  5. 9. chemicals secreted by endocrine glands to regulate body functions
  6. 10. system of acquiring knowledge through observation and experimentation to describe the natural world
  7. 11. white blood cell that destroys pathogenic microorganisms
  8. 13. two or more groups of tissues working together to perform specific functions
  9. 15. an idea or a suggestion often developed to explain something, the cause of which is unknown
  10. 16. a protein produced by the immune system; circulates in the plasma in response to the presence of foreign antigens
  11. 20. the "brain" of a cell; directs all activities and contains genetic information
  12. 21. a stage of life beginning between the ages of 8 and 14; indicates sexual reproduction is possible
Down
  1. 2. the study of the structure of the body
  2. 3. groups of cells that work together to accomplish the same task
  3. 6. cells in the body that evolve into specific cells in a particular organ system
  4. 8. physical point of connection between two bones; articulation
  5. 12. process in which white blood cells surround, ingest, and destroy a foreign invader
  6. 14. fibrous tissues that connect muscles to bone
  7. 17. any foreign substance, either outside or inside the body, that causes the immune system to produce antibodies
  8. 18. a method designed to logically formulate, test, and evaluate a problem or hypothesis
  9. 19. transparent, gel-like substance inside of every cell; cellular activities occur here