Mathematical model of dependence of heart rate on tissue concentration of acetylcholine.


The change in sinus period elicited by vagal stimulation depends on the rate of acetylcholine (ACh) release from the nerve endings, the rate of ACh degradation in the nodal tissue, and the responsiveness of the sinus node to ACh. Vagal stimulation in anesthetized dogs prolonged sinus period. After cessation of vagal stimulation, the sinus period returned to… (More)


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