ROLE OF THE CHEMORECEPTOR IN DIVING BRADYCARDIA IN RAT
- 1 January 1976
- journal article
- research article
- Published by Physiological Society of Japan in The Japanese Journal of Physiology
- Vol. 26 (4) , 395-401
- https://doi.org/10.2170/jjphysiol.26.395
Abstract
Responses in heart rate and blood pressure to the dive in unanesthetized rats were studied by submersion of the head in H2O for 30 s. During the dive, remarkable bradycardia developed and blood pressure was slightly elevated. Bilateral section of the carotid sinus nerves or selective destruction of the carotid body chemoreceptor by intrasinusal injection of acetic acid attenuated the bradycardic response to the dive, while section of the recurrent nerves or section of the sympathetic trunks at the cervical level together with the superior laryngeal nerves had no effect. The chemoreceptor may play an important role in diving bradycardia in rats.This publication has 2 references indexed in Scilit:
- Cardiac Rhythm during Breath‐Holding and Water Immersion in ManActa Physiologica Scandinavica, 1968
- The Reflex Nature of the Physiological Adjustments to Diving and Their Afferent PathwayActa Physiologica Scandinavica, 1963