PHYS20009 Lecture Notes - Lecture 4: Mean Arterial Pressure, Blood Pressure, Pulse Pressure

• School: University of Melbourne
• Department: Physiology
• Course: PHYS20009
• Professor: Charles

Document Summary

* systolic bp - max. pressure exerted in arteries when blood is ejected into them during systole (heart contracting phase). * diastolic bp - min. pressure within arteries when blood draining off into remainder of vessels during diastole (heart relaxing/filling phase). * pulse pressure - a measure of strength of pressure wave (difference between systolic & diastolic. *mean arterial pressure (map) - average pressure responsible for driving blood forward into tissues throughout cardiac cycle. * this graph demonstrates the passage of blood as it leaves the heart going from the left ventricle and then goes out to the rest of the body, and returning back to the heart into the right atrium. * there is a huge difference with blood pressure around different areas of the body. *diastolic blood pressure will have the strongest driving force on map compared to systolic blood pressure. *change of blood volume e. g. from a severe cut (blood loss), fluid intake e. g.