title: SEROTONIN RHYTHM IN THE PINEAL ORGAN: CONTROL BY THE SYMPATHETIC NERVOUS SYSTEM.
abstract: The serotonin content of the pineal organ of the rat varies diurnally in relation to the photoperiod. When the sympathetic nerves to the pineal are interrupted by the removal of the superior cervical ganglia, no such fluctuation in the serotonin content of the pineal occurs.
mesh_terms: D005724:Ganglia; D005725:Ganglia, Autonomic; D008660:Metabolism; D010507:Periodicity; D010829:Physiological Phenomena; D010827:Physiology; D010870:Pineal Gland; D051381:Rats; D012106:Research; D012701:Serotonin; D013562:Sympathectomy; D013564:Sympathetic Nervous System
chemical_list: D012701:Serotonin
keywords: EXPERIMENTAL LAB STUDY; GANGLIA, AUTONOMIC; METABOLISM; PERIODICITY; PHYSIOLOGY; PINEAL BODY; RATS; SEROTONIN; SYMPATHECTOMY