What is active relaxation of cardiac muscle?

Discussion in 'Medical Students - MD' started by rsweeney, Mar 28, 2004.

  1. rsweeney

    rsweeney Senior Member
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    What is ACTIVE relaxation of cardiac muscle? :confused:
     
  2. bewitched1081

    bewitched1081 Senior Member
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    if the basic contraction mechanism for cardiac muscle is the same as for skeletal, then it might refer to the fact the ca2+ is actively pumped back into the things (i forgot what they were called) in which they are contained and released upon depolarization.
     
  3. Olanzapine

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    Sarcoplasmic reticulum (SR).
     
  4. Gleevec

    Gleevec Peter, those are Cheerios
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    Im guessing that refers to the diastole phase of heart contraction.
    The "things" bewitched is referring to might be the myocardium? I believe that during diastole that Ca is actively pumped out of the myocardium, hence active.

    This is a very vague guess though, so take it with a heaping of salt.
     

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