1.  T    F     The CNS stands for cardiovascular nervous system.

2.  T    F     The somatic nervous system services all the
                 voluntary skeletal muscles.

3.  T    F     The parasympathetic nervous system would control 
                 the activity of the stomach and the sweat glands.

4.  T    F    Astrocytes help to form the blood brain barrier.

5.  T    F    The ependyma cells produce the cerebral spinal fluids.

6.  T    F    The Nissels bodies are left over rough endoplasmic
                reticulum and microtubules.

7.  T    F    Only cells containing nodes of Ranvier can conduct an
                action potential.

8.  T    F    A nucleus is a collection of nerve cell bodies outside
                the CNS.

9.  T    F    Gated channels come in type types called voltage
                and ligand.

10. T   F     Depolarization is always all or nothing.

11. Which of the following are causes of depolarization.
      a. neurotransmitters
      b. pressure
      c. light
      d. ions
      e. all of the above

12. The event that occurs directly after a threshold stimulus
      occurs is___?
      a. K channels open
      b. K channels close
      c. Na channels open
      d. Na channels close
      e. None of the above.

13. The period of time in which another threshold stimulus can
      not occur is called the____?
      a. absolute refractory period
      b. relative refractory period
      c. both absolute and relative refractory periods
      d. none of the above

14. The rate of speed of a B fiber is____?
      a. 1 meter per second
      b. 3 meters per second
      c. 10 meters per second
      d. 15 meters per second
      e. none of the above

15. The gap between chemical synapses is_____?
     a. 1 nanometer
     b. 10 nanometers
     c. 20 nanometers
     d. 1 micron
     e. 10 microns

16. Neurotransmitters are released by_____?
     a. endocytosis
     b. pincytosis
     c. active transport
     d. exocytosis
     e. both c and d.

17. An EPSP makes the neuron____?
     a. easier to fire
     b. hypopolarized
     c. opens Na channels
     d. activates second messengers
     e. all of the above

18. Summation causes a(n) ______?
     a. action potential
     b. resting potential
     c. hyperpolarization
     d. all of the above
     e. none of the above.

19. In the biosynthesis of catacholamines norepinephrine
     follows__?
     a. tyrosine
     b. dopamine
     c. norepinephrine
     d. all are possible pathways
     e. none of the above

20. Clostridium botulinum blocks the release of
      a. acetylcholine
      b. norepinephrine
      c. serotonin
      d. dopamine
      e. glycine