A person eats a plan that is an agonist to adrenergic receptors on contractile myocardial cells. Which of the following is NOT likely to happen if the adrenergic receptors on this persons conctractile myocardial cells get blocked.  Contractile myocardial cells will depolarize more slowly  slower uptake od Ca2+ by Ca2+ ATPase from sarcomeres  less Ca2+ released from sarcoplasmic reticula following action potentials  voltage gated Ca2+ channels get held open longer

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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A person eats a plan that is an agonist to adrenergic receptors on contractile myocardial cells. Which of the following is NOT likely to happen if the adrenergic receptors on this persons conctractile myocardial cells get blocked. 

  1. Contractile myocardial cells will depolarize more slowly 
  2. slower uptake od Ca2+ by Ca2+ ATPase from sarcomeres 
  3. less Ca2+ released from sarcoplasmic reticula following action potentials 
  4. voltage gated Ca2+ channels get held open longer 

 

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