Which of the following would produce a DECREASE in heart rate? A. sympathetic impulses along the cardioaccelerator nerves. B. increased sympathetic impulses along the vasomotor nerves C. decreased sympathetic impulses along the vasomotor nerves. D. parasympathetic impulses along the vagus nerve.
Option D. Parasympathetic stimulation (which nearly continually utilises the vagus nerve) cause a lower in coronary heart rate.
