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5 Written questions

5 Multiple choice questions

  1. is 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
  2. regulates the body's vital functions, such as heartbeat, breathing, digestion, and blood pressure; we generally do not think of these activities
  3. transmits sensory messages to the central nervous system. Its function is to carry messages from voluntary muscles and sense organs
  4. 2 parts: central and peripheral
  5. is a junction between the axon terminals of one neuron and the dendrites of another; messages only travel in one direction

4 True/False questions

  1. myelinmany 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. axon terminalsat the end of the axon, these small fibers branch out


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


  4. dendritesthin fibers branching out from the cell body; they receive info from other neurons and pass the message through the cell body; carries info to the cell body


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