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5 Written Questions

5 Multiple Choice Questions

  1. many axons are covered with this white fatty substance that insulates and protects the axon; this casing also helps to speed up the transmission of the messages sent by neurons
  2. is made up of nerve cells that send messages between the CNS and other parts of the body
  3. at the end of the axon, these small fibers branch out
  4. is a junction between the axon terminals of one neuron and the dendrites of another; messages only travel in one direction
  5. 2 parts: central and peripheral

4 True/False Questions

  1. neurotransmittersneurons send messages across synapses through the release of this; these are the chemicals that are stored in sacs in the axon terminals

          

  2. neuronstransmits messages away from the cell body; a neuron usually has only one axon; they vary greatly in length.

          

  3. central nervous systemis made up of nerve cells that send messages between the CNS and other parts of the body

          

  4. spinal cordis a column of nerves about as thick as a thumb that extends from the brain down the back. It's protected by the bones of the spine and transmits messages between the brain and the muscles and glans in the body

          

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