What Is the Function of P Cells Found in the Sinoatrial

question 45

Multiple Choice

What is the function of P cells found in the sinoatrial node and Purkinje fibers?

• A) They are receptors for pain stimuli,such as the pain that occurs during infarction.
• B) They prolong the refractory period before the next contraction.
• C) They are assumed to be the site of impulse formation.
• D) They initiate repolarization of the myocardium.

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