NERVOUS CELLS AND TISSUES

1.  Which of the following is not a structural feature of a neuron:  a.  synapse  b. cell body    c.  dendrites   d. axon

2.  A neuron that has as its primary function the job or action of connecting other neurons is called:  a.  motor neuron  b. sensory neuron   c. an association neuron   d. a neuroglial cell

3.  The substance released at  axonal endings is called a:   a.  hormone    b. neurotransmitter                c. cholinesterase    d. none of these

4.  The term central nervous system refers to the:  a. autonomic nervous system   b. brain, spinal cord, and peripheral nerves   c. brain and spinal cord   d. spinal cord and spinal nerves

5.  The glial cells appear to be involved in:  a. nutrition of the neurons   b. myelination of the axons of the CNS   c.  support of the nerve cells and phagocytosis of debris   d. all of these

Match the key terms with the descriptions that follow.  Key:  a. axon   b. axonal terminal/knobs             c.  cell body   d.  dendrite    e.   none of these

6-10      6.  Releases neurotransmitter  7. the metabolic/control area   8. afferent fiber   9. efferent fiber   10. conducts impulses away from the neuron cell body

11.  Myelination of the nerve fibers in the peripheral nervous system is the job of the:      a. Schwann cells  b. neuroglia   c. neurons   d. epithelial cells   e. oligodendrocyte

12. Bundles of axons are known as nerves except in the CNS where they are known as:    a. nuclei   b. ganglia   c. fascicles   d. tracts   e. interneurons

13.  The outer sheath of the axon of a peripheral nerve cell is produced by the:  a.  microglia               b. nissl body     c. nucleus    d. schwann cell   d.  olgiodendroglia 

14.  Typically where are multipolar neurons located in the nervous system? What roles do they play?

15.  Typically where are bipolar and unipolar neurons located in the nervous system?  What roles do the play?

16. What do efferent and afferent mean as the apply to the parts of a neuron?  As they apply to the organization of the nervous system?