Blood Pressure

The measure of the changing of fluid pressure in the circulatory system is defined as blood pressure. Blood pressure is the measured as the force per unit area applied on the walls of the blood vessels, especially the arteries. Systole is the peak pressure produced by the contraction of the left ventricle, which is followed by a fall in pressure, termed diastole, when the left vernicle relaxes in preparation for the next contraction. The standard blood pressure is measured at 120/8 mmHg, where the top represents the systolic pressure and the bottom represents the diastolic pressure. The product of the cardiac output and resistance is MAP, the mean arterial pressure. MAP is expressed as the resistance to blood movement; it depends on the pressure that pushes blood to various tissues throughout the cardiovascular system (7). Resistance within the cardiovascular system is the amount of friction

The autonomic nervous system is comprised of the parasympathetic nervous system and the sympathetic nervous system. Based on physiological factors, these systems can either raise the heart rate, sympathetic, or decrease the heart rate, parasympathetic. Exercise is used to explain the mechanism behind an increased heart rate in relation to the sympathetic nervous system. An increase in physical activity causes the cardio-acceleratory center to communicate to the sympathetic nervous system, which in turn triggers an increase in heart rate. Conversely, a signal is sent to the parasympathetic nervous system by the cardio-inhibitory causes the heart rate to decrease and relax after physical activity subsides (1). The baroreptors involved in the cardiovascular system respond to these sudden changes in arterial pressure. Baroreceptors can respond to both an increase and decrease in arterial pressure using a negative feedback mechanism to compensate for the fall or rise in blood