PT2

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Across
  1. 2. an organ that helps maintain homeostasis by working with all the body systems
  2. 5. a way of organizing things that goes from high to low
  3. 6. one of the functions of the skeletal system
  4. 7. it pumps blood around the body
  5. 11. nucleus, mitochondria and ribosomes are just some of cell _______
Down
  1. 1. group of similar cells working together
  2. 3. our pupils ______ if we are in a dark room for about an hour
  3. 4. a body system that transport materials to and from cells
  4. 5. the maintenance of relatively constant internal environment
  5. 8. a type of feedback that occurs when a change in a variable triggers a response which reverses the initial change
  6. 9. when a change in a variable triggers a response which causes more change in the same direction
  7. 10. a body system that gathers and interprets information