Posts Tagged ‘ventilation’

Gas exchange

Monday, September 12th, 2011

Do you know the difference between respirationbreathing and gas exchange?

You will, hopefully, by the end of the next topic.  Here are some resources to help you.  This one gives basic factual information.  This one is interactive.  And this one from Get Body Smart is also good.

Watch this excellent video from TEDMED where Dr Keshavjee brings a breathing lung on stage!


This one, about a smoking 2 year old, is much more disturbing to watch!  Again, thanks to Mr Taylor over at iBiology for finding the resource.


H6 Gas exchange

Thursday, April 15th, 2010

You need to get your head around this.  Gas Exchange     The effect of exercise on heart and lungs    And here’s a great presentation to help.

  • Define partial pressure.
  • Explain the oxygen dissociation curves of adult hemoglobin, fetal hemoglobin and myoglobin.
  • Describe how carbon dioxide is carried by the blood. [Include action of carbonic anhydrase, chloride shift, and plasma proteins]
  • Explain the role of the Bohr shift in the supply of oxygen to respiring tissues.
  • Explain how and why ventilation rate varies with exercise.
  • Outline the possible causes of asthma and its effects on the gas exchange system.
  • Explain the problem of gas exchange at high altitudes and the way the body acclimatizes.