Vagus Nerves and Baroreceptor Control of Ventricular Performance
نویسندگان
چکیده
منابع مشابه
Vagus nerves and baroreceptor control of ventricular performance.
• Several recent studies have shown that stimulation of the carotid sinus baroreceptors exerts a reflex, negative inotropic effect upon ventricular performance." Since it was generally accepted that the vagus nerves do not directly influence the ventricular myocardium," it was assumed that the efferent fibers of the carotido-ventricular reflex traversed sympathetic pathways exclusively. In many...
متن کاملDepression of Ventricular Contractility by Stimulation of the Vagus Nerves.
• Numerous workers have investigated the effects of stimulating the vagus nerves upon ventricular contractility in the mammalian heart. Many of these investigators" concluded that vagal stimulation has little or no influence on the contractility of the ventricles, while others^ deduced that it elicits a negative inotropic effect. Currently, the former opinion appears to be almost universally ac...
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هدف اصلی این تحقیق بررسی تاثیر برنامه ریزی زمانی، هم چنین افزایش میزان پیچیدگی تکالیف در نظر گرفته شده بصورت همزمان، بر دقت و صحت و پیچیدگی عملکرد نوشتاری زبان آموزان می باشد. بدین منظور، 50 نفر از دانش آموزان دختر در رده ی سنی 16 الی 18 سال به عنوان شرکت کنندگان در این زمینه ی تحقیق در نظر گرفته شدند و به دو گروه آزمایشی و کنترل بصورت اتفاقی تقسیم شدند. اعضای گروه آزمایشی هر دو تکلیف ساده و پی...
Neural control of the lower esophageal sphincter: influence of the vagus nerves.
We performed studies in the opossum to define the influence of the vagi in the control of lower esophageal sphincter (LES) function. Bilateral vagotomy caused transient sphincter hypertension which was prevented by phentolamine and by atropine. Stimulation of the peripheral end of vagus, after bilateral cervical vagotomy, caused relaxation of the LES over a wide range of frequency and intensity...
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ژورنال
عنوان ژورنال: Circulation Research
سال: 1966
ISSN: 0009-7330,1524-4571
DOI: 10.1161/01.res.18.1.101