Heart rate

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Across
  1. 2. ........... nervous system - Responsible for INCREASING heart rate
  2. 5. A chemical produced in the body and transported in the blood to stimulate tissues into action.
  3. 6. Regulates heart rate (7,7,6).
  4. 8. Stimulates the SA node in the heart.
  5. 9. Stretch receptors within the blood vessels that send information to the (CCC) depending on blood pressure
  6. 11. ......... nervous system - The involuntary component of the nervous system.
Down
  1. 1. ............... nervous system - Responsible for returning the heart rate BACK to normal RESTING levels.
  2. 3. Nerve ........ - The way signals are transmitted through the central nervous system.
  3. 4. The part of the brain that controls heart and respiratory rate (7,9).
  4. 7. ............ rise - The response the heart has preparing the body for forthcoming activity.
  5. 10. .......... node - The heart's intrinsic pacemaker.