The heart can be made to beat faster by which of the following? A. sympathetic stimulation of the SA node B. sympathetic stimulation of the AV node C. parasympathetic stimulation of the SA node D. parasympathetic stimulation of the AV node
Option A. The heart can be made beat faster by sympathetic stimulationnof SA nodes. The sympathetic nervous system stimulates the heart, at the same time as the parasympathetic NS inhibits the heart.
