Biology 1

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Across
  1. 5. Part of the brain where the spinal cord enters the skull: it controls the body’s vital functions such as breathing, blood pressure and heart rate.
  2. 7. A nerve fibre that sends nerve impulses away from the cell body.
  3. 8. nerve cells that carry messages from the CNS to effectors
  4. 9. Any factor that stimulates a receptor and brings about a response.
  5. 11. quick automatic actions that protect the body from danger: they are also known as reflexes.
  6. 12. neurones nerve cells that carry messages from cells in the sense organs to the CNS.
Down
  1. 1. (CNS) The brain and spinal cord.
  2. 2. The electrical message carried by a nerve cell.
  3. 3. The nerve pathway operating in a reflex action.
  4. 4. The space between two neutrones.
  5. 6. a nerve cell.
  6. 10. Muscles or glands that put the message into effect.