Life Science - Chapter 16 Terms

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Across
  1. 3. A chemical on the cell membrane of an organism that causes an immune system to produce antibodies to attack it
  2. 5. The inner layer of the eye containing receptors that are sensitive to light
  3. 8. A local response to pathogens consisting of increased blood flow and macrophages attacking the pathogens
  4. 10. The part of the central nervous system that extends down the back and relays impulses between the brain and the rest of the body
  5. 14. The portion of the brain that helps control breathing, heartbeat, blood pressure, coughing, sneezing, and swallowing
  6. 16. The portion of the nervous system that does not include the brain and spinal cord
  7. 17. The part of the nervous system composed of the brain and spinal cord
Down
  1. 1. The membrane that stretches over the opening to the middle ear and conducts vibrations to the hammer
  2. 2. The portion of the brain that helps with motor control
  3. 4. A white blood cell that may attack a pathogen, attack an infected body cell, or activate B cells
  4. 6. The opening in the center of the iris that allows light to enter the eye
  5. 7. An introduction of antibodies from outside the body to help defend against a type of pathogen
  6. 9. A white blood cell that produces antibodies
  7. 11. A protein that reacts against specific antigens
  8. 12. A fast-acting defense against a pathogen caused by a previous infection by that same pathogen
  9. 13. The coiled tubular structures where sound vibrations are changed into nerve impulses
  10. 15. The largest portion of the brain, consisting of two dome-shaped hemispheres that control conscious thinking