If the Sinus Node Stops Discharging, What Is the Expected

question 4

Multiple Choice

If the sinus node stops discharging, what is the expected heart rate (in beats per minute) if the ventricular Purkinje fibers take over as the cardiac pacemaker?

• A)5
• B)30
• C)55
• D)60
• E)72

---

Definitions:

Maturity

The date on which a financial obligation must be repaid or a financial instrument, such as a bond, reaches its final due date and the principal is returned to investors.

Principal Payment

The portion of a loan payment that goes towards paying down the original amount borrowed, as opposed to interest.

Installment Note

A debt instrument that requires a series of payments over time, including interest and principal.

Annual Payment

A recurring payment made once a year, often related to loans, insurance policies, or subscriptions.