OBSERVATIONS ON THE CONTROL OF THE BLADDER.—THE EFFECTS OF NERVOUS STIMULATION AND OF DRUGS

¹ Department of Pharmacology, University of Manchester

The view that the nervous control of the bladder in the cat is compounlded of syvmpathetic inhibitioni and parasympathetic excitation is inacculrate. Evidence is provided to show that in the cat and the dog the sympatthetic and(parasymipathetic nerves are each both excitor anid inhibitor. The effects produLced by stimullation of a vesical nerve depencd upon at least two factors: muscle tonus and the nature and degree of the ansesthesia. These observations are confirmed and expanlded by comparisoni wN-ith the actions of appropriate drugs.