Anatomy, Ch. 1

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Across
  1. 2. the inner framework made up of all the bones of the body
  2. 4. a body tissue that carries electrical messages back and forth between the brain and other parts of the body
  3. 5. a muscle that is attached to the bones of the skeleton and provides the force that moves the bones of the body
  4. 7. the reaction of a person's body to potentially threatening, challenging, or disturbing events
  5. 8. any change or signal in the environment that can make an organism react in some way
  6. 10. a body tissue that provides support for the body and connects all its parts
  7. 15. a group of organs that work together and perform major functions
  8. 16. the process by which nutrient molecules pass through the wall of the digestive system into the blood
  9. 18. a place in the body where two bones come together
  10. 19. a large oval organelle that contains the cell's genetic material in the form of DNA and controls many of the cell's activities
  11. 20. an organ that produces and releases chemicals either through ducts or into the bloodstream
  12. 21. substances in food that provide the raw materials and energy needed for an organism to carry out its essential processes
Down
  1. 1. a chemical that affects growth and development
  2. 3. a body tissue that covers the interior and exterior surfaces of the body
  3. 6. a group of similar cells that perform the same function
  4. 9. a body tissue that contracts--or shortens-- making body parts move
  5. 10. the outside border of a cell
  6. 11. the basic unit of structure
  7. 12. a body structure that is composed of different kinds of tissues that work together
  8. 13. the condition in which an organism's internal environment is kept stable in spite of the changes in the external environment
  9. 14. clear/jellylike substance that contains many cell structures
  10. 17. an action or change in behavior that occurs as a result of a stimulus