What is Which of the following physiological change can occur when there is vagal stimulation of hea? and explain in detail?
Stimulation of parasympathetic (vagus) fibers causes decrease in the hea rate (increased R-R interval), reduce the force of contraction, and constrict the coronary aeries. Stimulation of sympathetic nerves increases hea rate (decreased RR interval). Ref: Moon D.A., Foreman K.B., Albeine K.H. (2011). Chapter 4. Hea. In D.A. Moon, K.B. Foreman, K.H. Albeine (Eds), The Big Picture: Gross Anatomy.