Blood Pressure Lab Report
This experiment involves measuring and identifying the change in blood pressure. In this experiment, measurements of systolic arterial pressure, diastole arteriole pressure, and pulse rate were recorded and observed. The effects of changes in the body were observed and measured during body positioning, exercise, and cognitive stress. The purpose of this lab experiment was to test multiple variables that can have an effect on blood pressure and pulse. As stated, the following variables that were tested were changes in posture, exercise, and a cognitive stressor that involved spelling forward and backwards.
“Blood pressure is defined as the pressure that blood exerts against any unit area of the walls blood vessels or a chamber of the heart.” …show more content…
Stroke volume is defined as the volume of blood that is pumped out by only one ventricle with each beat. The force that’s done by ventricle contraction impacts stroke volume. Although stroke volume is nearly constant, temporary stressors influence the heart rate, which impacts cardiac output, influencing the heart rate and contractility. If there is an increase in stroke volume, there is an increase in the cardiac output; the heart may be increased as well. The same rule will apply if there is a decline the cardiac output; there will always be a correlation that varies and relates with stroke volume and the heart rate. Homeostatic is the reason temporary stressors can influence the heart rate. Factors can be chemically, physically and neural impacting. Resistance also impact blood pressure due to the blood viscosity, diameter, and vessel length. If blood pressure rises the blood flow will speed up; if the blood pressure drops, the blood flow will also drop as. “Pressure results when flow is opposed by resistance.” (Marieb et. al 2012) . There are several factors that are involved in blood pressure measurement results the sympathetic and parasympathetic nervous system are also factors that influence results. While the sympathetic nervous system (fight or flight) increases heart rate and the strength of contraction by the cardioacceleratory center, the parasympathetic system slows down the heart rate, and decreases the contraction strength and blood pressure using the cardioinhibitory
“Blood pressure is defined as the pressure that blood exerts against any unit area of the walls blood vessels or a chamber of the heart.” …show more content…
Stroke volume is defined as the volume of blood that is pumped out by only one ventricle with each beat. The force that’s done by ventricle contraction impacts stroke volume. Although stroke volume is nearly constant, temporary stressors influence the heart rate, which impacts cardiac output, influencing the heart rate and contractility. If there is an increase in stroke volume, there is an increase in the cardiac output; the heart may be increased as well. The same rule will apply if there is a decline the cardiac output; there will always be a correlation that varies and relates with stroke volume and the heart rate. Homeostatic is the reason temporary stressors can influence the heart rate. Factors can be chemically, physically and neural impacting. Resistance also impact blood pressure due to the blood viscosity, diameter, and vessel length. If blood pressure rises the blood flow will speed up; if the blood pressure drops, the blood flow will also drop as. “Pressure results when flow is opposed by resistance.” (Marieb et. al 2012) . There are several factors that are involved in blood pressure measurement results the sympathetic and parasympathetic nervous system are also factors that influence results. While the sympathetic nervous system (fight or flight) increases heart rate and the strength of contraction by the cardioacceleratory center, the parasympathetic system slows down the heart rate, and decreases the contraction strength and blood pressure using the cardioinhibitory