In an ECG Pattern, the PQ Interval Indicates How Long

question 89

Multiple Choice

In an ECG pattern, the PQ interval indicates how long it takes for the cardiac impulse to travel from the

• A)SA node to the atrial muscle fibers.
• B)SA node to the Purkinje fibers.
• C)AV node to the atrial muscle fibers.
• D)SA node through the AV node.

---

Definitions:

Law of Diminishing Returns

Law of Diminishing Returns states that in a production process, adding an additional factor of production, while holding all others constant, will at some point yield lower per-unit returns.

Sunk Costs

Costs that have already been incurred and cannot be recovered or refunded, and should not influence current or future decisions.

Variable Costs

Costs that change in proportion to the level of production or service activity.

Fixed Costs

Expenses that remain constant regardless of the amount of production, like lease payments or wages.