PHYL 1010X Chapter Notes -Arteriole, Capillary, Prostaglandin

• School: Dalhousie University
• Department: Physiology
• Course: PHYL 1010X
• Professor: n/a

Document Summary

Map is determined by: blood volume, fluid intake & fluid loss, effectiveness of the heart as a pump (cardiac output, heart rate & stroke volume, resistance of the system to blood flow, diameter of the arterioles, relative distribution of the blood between arterial & venous blood vessels, diameter of the veins. Remember f = d p/r: blood flows if a pressure gradient (d p) is present, blood flows from areas of higher pressure to areas of lower pressure, blood flow is opposed by the resistance (r) of the system, 3 factors affecting resistance are radius of the blood vessels, viscosity of the blood & length of the, flow is usually expressed in either l/min or ml/min, velocity of flow is usually expressed in either cm/min or mm/sec, the primary determinant of velocity (when flow rate) is constant is the total cross sectional area of the system vessel(s)