A nurse is reviewing the structure and function of the neurologic system in preparation for a work placement on a neurologic unit.
What statement most accurately describes an aspect of the autonomic nervous system?

a. Nicotinic receptors are primarily associated with the parasympathetic nervous system
b. Cholinergic receptors are exclusively located in the sympathetic nervous system
c. Alpha- and beta-receptors are the two basic types of muscarinic receptors
d. The autonomic nervous spans the central and peripheral nervous systems