IOE 333 Chapter Notes - Chapter 9: Stroke Volume, Arteriole, Respiratory System

• School: U of M
• Department: Industrial And Operations Engineering
• Course: IOE 333
• Professor: Clive D'Souza

Document Summary

Influenced by radii or arterioles, thoroughfare channels (shortcuts between arterioles and venules), one-way valves in veins, muscle pump (dynamic pumping massaging action of muscle activity) Cardiac output (q) - amount of blood pumped out of left ventricle. Q (l/min) = hr (beats/min) * sv (l/beat) Stroke volume (sv): amount of blood per beat, small range (resting = . 05 l/beat, moderate work = . 10 l/beat) Heart rate (hr): large range, largely responsible increased blood output, primary measurement of physical workload (50-220 meats/min) Q: resting = 5 l/min, moderate work = 15 l/min, heavy work = Breathing frequency (from 10-15 resting up to 45 breaths per min) Basal metabolism: lowest level of energy expenditure needed to maintain life (~1600-1800 kcal/24hrs) Resting metabolism: low-intensity everyday activities, 10-15% above basal metabolism. Working metabolism: metabolic cost of work, increased level of metabolism to meet work demands. O2 deficit: body adjustment to increase consumption.