2022-07-072022-07-07195823157078https://hdl.handle.net/10657/10459In this report, this report, the effects of the intravenous injections of 5-hydroxytryptamine (serotonin) on the respiratory and cardiovascular systems of the dog have been investigated. This study also includes a test of the hypothesis that the initial hypernea elicited by the injection of 5-hydroxytryptamine produced a state of acapnia which in turn is responsible for the subsequent period of apnea. [...]application/pdfenThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. Section 107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.Thesisreformatted digital