Organ Systems A - Post Test review

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Across
  1. 4. an action that is an involuntary, rapid response to a stimulus that happens without conscious thought, primarily controlled by the spinal cord to allow for quick protection
  2. 5. the part of the autonomic nervous system that is active when the body is relaxed
  3. 6. the part of the nervous system responsible for voluntary skeletal movement and reflex arcs
  4. 11. receive the stimuli
  5. 12. deoxygenated blood goes to the ___ to become reoxygenated
  6. 13. a neuron that generates an impulse
  7. 14. the top 2 chambers of the heart are called the ____.
  8. 15. where most of the contraction of the heart muscle occurs.
Down
  1. 1. responsible for reflex actions (2 words)
  2. 2. these are found in the heart and veins to prevent back-flow of blood
  3. 3. the ___ is responsible for the pumping action that moves blood throughout the body
  4. 6. the part of the autonomic nervous system that is active when the body is under stress
  5. 7. where muscle contract occurs to contract the whole muscle
  6. 8. relays impulse to motor neurons in the spinal cord
  7. 9. these muscles are responsible for voluntary movement
  8. 10. a nerve cell