BIOM20002 Lecture Notes - Lecture 36: Windkessel Effect, Pressure Measurement, Blood Vessel

• School: University of Melbourne
• Department: Biomedicine
• Course: BIOM20002
• Professor: All

Document Summary

Lecture 36 pressure, volume flow and resistance. Distribution of substances for nutrition, growth and repair, waste removal. Circulatory system is an efficient system not for immediate responses. Smooth muscles are efficient in a way that defines the diameter of vessels to control the tone and activity; local control of smooth muscles logically dictated by the level of activity required. Flow rate is identical at every point in cvs closed system. If not identical there will be places with no flow. It(cid:859)s the total (cid:271)lood flo(cid:449) that is (cid:272)o(cid:374)sta(cid:374)t if we locally change (say vasoconstrict) the diameter of one blood vessel, somewhere else another vessel of compartment will have to compensate to maintain an overall constant flow. Windkessel effect arteries can maintain a relatively constant blood pressure despite and pulsating nature of the blood flow because of the elasticity in arteries. Systemic veins serve as an expandable volume reservoir: are called the capacitance vessels.