KPE161H1 Lecture Notes - Lecture 9: Fick'S Laws Of Diffusion, Flow Measurement, Cardiac Output

• School: UTSG
• Department: Kinesiology & Physical Education
• Course: KPE161H1
• Professor: Tim Taha

Document Summary

Flow meter: look at energy produced by aerobic system, o2 from the air needs to get to the mitochondria in cells. Width only allows 1 red blood cell to pass through: oxygen can diffuse through alveoli and capillary membranes into blood. Easily scarred becomes thicker and diffusion does not occur easily: beside capillaries if there are no capillaries, no exchange can take place. May be some leakage between structures: contain pores of kohn release surfactant to allow lungs to open and close. So surfaces of lungs don"t stick together. Also allow air travel from one cell to the next. In solution: very small amount, not enough to sustain living, but is important for regulation of breathing. Signals the brain to breathe or not to breathe. Low solution of o2 (such as at altitude) causes ve (ventilation) to increase. Hemoglobin: special protein, carries 65-70x more o2 than fluid, captures about 197 ml o2 / l of blood.