The Function of P Cells Found in the Sinoatrial Node

question 27

Multiple Choice

The function of P cells found in the sinoatrial node and Purkinje fibers is that they:

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

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