Heart Rate

Topics: Blood, Oxygen, Artery Pages: 1 (373 words) Published: October 20, 2014

Factors Affecting Heart Rate, Respiratory Rate, and Blood Pressure By
Ann-Geyn PanganFor Michele MacKenieInvestigative Team:Biology 0993Nejat MuradOctober 14, 2014Jenn SakelariouIntroduction In class we studied circulatory system, especially the heart that plays a large part in human. We learned and analyzed its part and function in the body. The purpose of this experiment is to compare the readings of how the heart rate, respiratory rate and blood pressure respond to increasing levels of physical activity. Hypotheses

If I compare my systolic pressure after 1 minute of exercising with increasing levels of physical activity, then I expect that my systolic pressure will increase because more pressure is exerted on the walls of the blood vessels by the blood being pushed faster through at every beat of the heart to reach the muscles. (Miller ad Levine, 2002; Livestrong 2014) If I compare my diastolic pressure after 1 minute of exercising with increasing level of physical activity, then I expect that my diastolic pressure will change minimally because as the blood being pushed faster the arteries start to dilate to make more space for the blood returning to heart to meet muscles increased oxygen demand. (Miller ad Levine, 2002; Livestrong 2014) If I compare my heart rate (pulse) after 1 minute of exercising with increasing levels of physical activity, then I expect that my heart rate will increase because the blood in the body needs more oxygen so the blood starts to circulate faster to the muscles that demands for more oxygen for contraction and movement. (Reese, etal., 2012; Livestrong 2014) If I compare my breath rate after exercising with increasing levels of physical activity, then I expect that my breath rate will increase because the muscles, especially the heart, are working harder. Increasing muscle activity demands for more oxygen intake to get rid of carbon dioxide. Exercising produces more CO2 in the blood due to increased cellular respiration by the...
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