do nicotinic receptors respond to epinephrine
the cell of a sensory receptor responds to a specific energy change in its environment and initiates a corresponding sensory input. adrenergic r's. receptors for epinephrine or norepinephrine, such as those on effector organs innervated by postganglionic adrenergic fibers of the sympathetic nervous system. Classified as Î±-adrenergic receptors, which are stimulated by norepinephrine, and Î²-adrenergic receptors, which are stimulated by epinephrine.