The Hear1 - sudden decrease in blood pressure. Emotions...

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The Heart Extrinsic Regulation of the Heart Extrinsic regulation refers to nervous and hormonal mechanisms. Sympathetic stimulation increases stroke volume and heart rate; parasympathetic stimulation decreases heart rate. The baroreceptor reflex detects changes in blood pressure and causes a decrease in heart rate and stroke volume in response to a sudden increase in blood pressure or an increase in heart rate and stroke volume in response to a
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Unformatted text preview: sudden decrease in blood pressure. Emotions influence heart function by increasing sympathetic stimulation of the heart in response to exercise, excitement, anxiety, or anger and by increasing parasympathetic stimulation in response to depression. Alterations in body fluid levels of carbon dioxide, pH, and ion concentrations, as well as changes in body temperature, influence heart function....
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