Kinesiology 2230A/B Lecture Notes - Lecture 3: Partial Pressure, Hematocrit, Myoglobin
12 Apr 2013
School
Department
Course
Professor
Document Summary
Can be utilized within first few seconds in activity. Average male 14-18g hb/100ml blood: hematocrit: proportion of formed elements (hb) to plasma. 12 g hb/100ml blood x 1. 34 ml o2/g = 16 ml o2/100ml blood. Concentrations of hb and mb as partial pressure changes. Every negative change in pp, going to see a large negative change in hb saturation. Pp drops and saturation changes, all oxygen is being dropped off at a tissue. Hb lower because you are using oxygen, which is picked up by mb. Normal venous blood is between 40-100mmhg: still have 70% saturation of hb. Venous during exercise: pp is 10-40mmhg: low saturation of hb, still high saturation of mb. Gas expansion increases as altitude increases: 1l to 4l but still same number of o2 molecules, volume has increased therefore need to breathe more often to get same amount of o2 into blood. Still delivering same amount of o2 to tissue.
