The two major types of receptors on or in the effectors (tissues) in the sympathetic or adrenergic neuroeffector system are
a. nicotinic and muscarinic.
b. alpha (alpha) and ß (beta).
c. nicotinic and beta.
d. muscarinic and alpha.
b. The two major types of receptors on or in the effectors (tissues) in the sympathetic or adrenergic neuroeffector system are classified as a (alpha) and b (beta) with subdivisions of ?1, ?2, ß1, and ß2.
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