How Does The Sympathetic Nervous System Increase Stroke Volume?
How Does The Sympathetic Nervous System Increase Stroke Volume? Sympathetic nerves also innervate the myocardium; increases in sympathetic activity increase myocardial contractility and, therefore, increase stroke volume. Does parasympathetic nervous system increase stroke volume? In comparison, parasympathetic stimulation releases ACh at the neuromuscular junction from the vagus nerve. The membrane hyperpolarizes and inhibits contraction to