BIOC34H3 Lecture Notes - Vascular Resistance, Baroreflex, Baroreceptor
Document Summary
Lecture 9: blood pressure and lung mechanics i: blood pressure regulation. To date, almost all of the cardiovascular system concepts and control systems that we have discussed will affect blood pressure. If blood pressure is changing, then nervous, hormonal and local effects will all converge to affect either cardiac output (by altering stroke volume or heart rate) or total peripheral resistance. Much of blood pressure regulation is extrinsic to blood vessels, occurring as a result of nervous or hormonal input; conversely, some of the regulation is intrinsic to blood vessels or the organs which they supply. There are also differences in the regulation of blood pressure over the short term (that is, over seconds or minutes) and its regulation over the long-term (from minutes to days). The latter have more to do with fluid balance and excretion of fluid from the kidneys or retention of fluid at the kidneys.
