Reflex Arc & Reproduction

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Across
  1. 2. The passage along with an egg travels before being fertilised by a sperm cell(7)
  2. 4. The nerve cells that are activated by input from the environment(7)
  3. 5. The type of transmission that takes place at the synapse with the release of neurotransmitters(8)
Down
  1. 1. Nerve cells that send commands from the brain to the muscles(5)
  2. 3. Part of the male reproductive system where sperm cells are produced(6)