Why Would Someone Need to Have an Artificial Pacemaker Installed

question 38

Multiple Choice

Why would someone need to have an artificial pacemaker installed in his or her heart tissue?

• A)Because the heart valves are not directing blood flow through the chambers properly.
• B)Because the AV node is not sending signals to the ventricles.
• C)Because the SA node is not functioning properly to generate action potential at the proper intervals.
• D)Because the Purkinje fibers are not distributing the signal properly.

---

Definitions:

Progressivity

A characteristic of a tax system in which the tax rate increases as the taxable amount increases, placing a larger burden on high-income earners.

Federal Payroll Tax

Taxes imposed by the federal government on the wages of employees, which fund social security and Medicare programs.

Equilibrium Price

The value at which there is a perfect match between how much of a good or service is wanted and how much is provided, leading to a state of market equilibrium.

Equilibrium Quantity

The quantity of goods or services supplied and demanded at the equilibrium price, where the quantity supplied equals the quantity demanded.