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    Asclepius1's Avatar
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    What happened when the O2 dissociation curve shifts to the l

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    What happened when the O2 dissociation curve shifts to the left?

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    Asclepius1's Avatar
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    Re: What happened when the O2 dissociation curve shifts to t

    Quote Originally Posted by What happened when the O2
    What happened when the O2 dissociation curve shifts to the left?
    This is easy. O2 curve shifts to the left means oxygen is not as easily unloaded from the hemoglobin. If it shifts to the right then it can unload the oxygen more easily.

    Factors that shift the O2 curve to the right: Increase in H+ (decrease in pH). Increase in CO2

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    re

    Just to say that not only increased CO2 or H+ can cause shifting to right but also increased body temperature, 2,3-DPG, type of hemoglobine (fetal, S, Met...), carbon-monoxide.

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    aidan77 is offline Newbie 510 points
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    when o2 dissosiation curve shifts to right that means Hions are decreased/pCO2 pressure is dicreased/temperatuse is decreased/diphosphogliserateis dicreased in the blood.as u see all of these showmetabolismrate to decreased also.so we can say that when tissues need more O2 the more the curve shifts to right so Hg can release O2 to the tissues.right?

  5. #5
    SALY Guest

    No thats wrong! When the 02 d curve shifts to the RIGHT, this means the 02 affinity is lowered- i.e. the haemoglobin obtains 02 LESS EASILY but releases it MORE EASILY. It shifts to the right in conditions of increased CO2 (bohr effect) more h+ ions (i.e lowered ph) etc, an increase in temperature( for two reasons - higher temperature means faster rate of respiration, so more CO2 produced, and also temperature denatures the bond between o2 and haemoglobin, therefore there is less oxyhaemoglobin) Love SAL in wales!!!! x

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    SALY! Guest

    I Am Seventeen!!!!!!

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    Quote Originally Posted by SALY! View Post
    I Am Seventeen!!!!!!
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    Last edited by MDiva; 04-15-2007 at 10:58 AM.
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