THE NATURE OF BLADDER RESPONSES FOLLOWING STIMULATION OF THE ANTERIOR HYPOTHALAMUS

Abstract

Stimulation of the 2d and the 3d sacral roots as well as the hypogastric nerve yields a contraction of the bladder. The difference is only a matter of degree. The response of the bladder following stimulation of the ant. hypothalamus is manifested through the sacral auto-nomic as well as the hypogastric nerves. The responses of the bladder to central and peripheral stimulation are resistant to atronization. The bladder so treated fails to maintain its usual sustained tonus during stimulus, but its power of contraction is retained and is reduced only following massive inj. of atropine. Ergotamine is potent in blocking the response of the bladder upon stimulation of the ant. hypothalamus. Its action is apparently not peripheral.