What effect would an increase in sympathetic stimulation of the heart have on the end-systolic volume (ESV)?
What will be an ideal response?
An increase in sympathetic stimulation of the heart would increase heart rate and force of contraction. The end-systolic volume (ESV) is the amount of blood that remains in a ventricle after a contraction (systole). The more forcefully the heart contracts, the more blood it ejects. Therefore, increased sympathetic stimulation results in a lower ESV.
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