Kinesiology 4432A/B Lecture Notes - Lecture 1: Systolic Geometry, Pulse Pressure, Viscosity
4 Nov 2017
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Document Summary
Physiology of exercise-lecture 1 & 2: physiology is about homeostasis: maintaining flow and pressure, and neural control of the circulation, exercise provides an extreme case where homeostatic adjustments in many systems must be coordinated rapidly. Steady-state conditions (ex: average blood flow ever time): vascular resistance to flow (jean leonard marie poiseuille, resistance, co, map: george ohm, resistance vs. conductance. Pulsatile flow (ex: effects of cardiac cycle): vascular compliance (the damping effects of elastic blood vessels, heart level: pulsatility, downstream vasculature: vascular system mechanics (from the aorta to the capillary. : dynamic viscosity (viscosity of blood flowing through) Q: volumetric flow rate r: vessel (vascular bed) radius. *r vasoconstriction (decrease in diameter): narrowing of the blood vessels resulting from contraction of the muscular wall of the vessels. R (radius) changes have robust/major changes on resistance: the segment length and tube size are fundamental determinants of r and pressure drops.
