An increase in sympathetic stimulation of the heart would increase stroke volume by increasing View Available Hint(s) end systolic volume heart rate end diastolic volume contractility Submit

An increase in sympathetic stimulation of the heart enhances contractility, which is the strength of the heart's contractions. This means that the heart pumps blood more forcefully, emptying more blood from the ventricles during each heartbeat, thus increasing stroke volume. Essentially, it allows the heart to work more efficiently when the body requires more blood, like during exercise or stressful situations! Additionally, sympathetic stimulation also leads to an increase in heart rate, further supporting a greater cardiac output. This means not only does the heart beat stronger, it also beats faster! This combined effect effectively ensures that your body gets the oxygen and nutrients it needs when it’s revved up and ready to go.