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The specialised patch of modified heart muscles from where contraction initiates, is/are :
  • a)
    Pacesetter of heart
  • b)
    both SAN and AVN together
  • c)
    Pacemaker of heart
  • d)
    none of these
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
The specialised patch of modified heart muscles from where contraction...
  • The nodal musculature has the ability to generate action potentials without any external stimuli.
  • The number of action potentials that could be generated in a minute varies at different parts of the nodal system.
  • The SAN can generate the maximum number of action potentials and is responsible for initiating and maintaining the rhythmic contractile activity of the heart.
  • Therefore, it is called the pacemaker.
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The specialised patch of modified heart muscles from where contraction...
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