KINE 3012 Lecture Notes - Lecture 11: Blood Gas Tension, Hemoglobin, Anaerobic Exercise

• School: York University
• Department: Kinesiology & Health Science
• Course: KINE 3012
• Professor: Michael Connor

Document Summary

Peripheral chemoreceptors: when arterial pressure of oxygen decreases, receptors increase their rate of discharge. When pressure decreases below 60 then receptors response faster. Why are receptors unresponsive when pao2< 60mmhg: hemoglobin is saturated with oxygen when >60mmhg, increasing breathing when pao2 60mmhg because hb is 90% saturated, decreasing pao2 below 60mmhg results in significant decreases in saturation. Increasing rate of breathing is worth it: changed in oxygen. Changes in ve are minimal until pao2 60