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#Question id: 11004


Which of the following is most likely to cause the heart to go into spastic contraction?

#XL - T Zoology
  1. Increased sympathetic activity
  2. Decreased extracellular fluid potassium ions

  3. Excess extracellular fluid potassium ions
  4. Excess extracellular fluid calcium ions

Answer:- Option(s): 4


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