Nervous System practice crossword

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Across
  1. 1. Connects the brain and spinal cord
  2. 6. Branchlike parts of a neuron that are specialized to receive information.
  3. 9. Area of the brain responsible for all voluntary activities of the body
  4. 11. A threadlike extension of a neuron that carries nerve impulses away from the cell body.
  5. 12. neurons that carry nerve impulses from one neuron to another
  6. 13. neurons that carry outgoing information from the brain and spinal cord to the muscles and glands
  7. 15. Nerves that run up and down the length of the back and transmit most messages between the body and brain
  8. 16. a simple, automatic response to a sensory stimulus, such as the knee-jerk response
  9. 17. a nerve cell; the basic building block of the nervous system
  10. 18. the part of the peripheral nervous system that controls the glands and the muscles of the internal organs (such as the heart).
  11. 19. a reaction to a stimulus
  12. 21. A large structure of the hindbrain that controls fine motor skills.
Down
  1. 2. the division of the peripheral nervous system that controls the body's skeletal muscles
  2. 3. a signal to which an organism responds
  3. 4. neurons that carry incoming information from the sensory receptors to the brain and spinal cord
  4. 5. the sensory and motor neurons that connect the central nervous system to the rest of the body
  5. 7. the message carried by a neuron
  6. 8. The mass of nerve tissue that is the main control center of the nervous system
  7. 10. consists of the brain and spinal cord
  8. 14. the junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron
  9. 20. A bundle of nerve fibers