Autonomic Nervous System MCQs Targets of the autonomic

Autonomic Nervous System MCQs

• Targets of the autonomic nervous system include all of the following except • cardiac muscle. • exocrine glands. • skeletal muscle. • endocrine glands.

• Somatic motor neurons have cell bodies located ____ the CNS that project axons only to ____; and are usually under ____ control. • outside; skeletal muscle; involuntary • inside; the viscera; involuntary • inside; skeletal muscle; voluntary

• Which statement regarding autonomic parasympathetic neurons is true? • They are usually activated as a single unit (mass activation). • They emerge from the brain and sacral regions. • They form white rami communicantes fibers. • They may have ganglia located along the spinal cord.

• Which of the following statements about parasympathetic neurons is true? • The nerve fibers are contained in spinal nerves. • They synapse in terminal ganglia, either next to or within the organs innervated. • They originate in thoracic and lumbar regions of the spinal cord. • Postganglionic fibers are usually longer than those of sympathetic neurons.

• The very long cranial nerve that originates from nuclei in the medulla oblongata and projects preganglionic fibers through the neck to the thoracic and abdominal cavities, is the _____ nerve. • optic (II) • oculomotor (III) • facial (VII) • vagus (X)

• The separate effects of sympathetic and parasympathetic innervation of the pacemaker region of the heart can best be described as • antagonistic. • complementary. • cooperative.

• Which of the following target tissues is innervated by only neurons from the sympathetic nervous system? • adrenal medulla • lacrimal glands • bronchioles • iris of the eye

• In general, parasympathetic activation will produce effects that are _____ to those produced by activation of sympathetic neurons. • similar, agonistic • opposite, antagonistic • complimentary • synergistic

• When the parasympathetic system is stimulated, what neurotransmitter is released at the effector organ? • acetylcholine • norepinephrine • dopamine

• Which of the following statements is true for preganglionic neurons of the SANS? • They are relatively long. • They exit from the T 2 -L 2 region of the spinal cord. • They release epinephrine. • They synapse at the effector organ.

• The "fight or flight" response is the term used to describe activation of the ____. • ANS • CNS • PANS • SANS