[Purinergic (P-type, nonadrenergic, noncholinergic) or peptidergic nerves?]

Rightfulness of subdivision of the nervous system into constituting it cholinergic, adrenergic and purinergic nerves (Burnstok, 1972) is discussed in the review. A necessity of distinguishing the neurons and their fibers united under the name of peptidergic nerves, as a special type, has been stated.