The First Heart Sound (S₁) Is Created Primarily by Which

question 56

Multiple Choice

The first heart sound (S₁) is created primarily by which of the following?

• A) Closure of the semilunar valves
• B) Opening of the semilunar valves
• C) Opening of the atrioventricular valves
• D) Closure of the atrioventricular valves

---

Definitions:

Notes Payable

A liability account that represents amounts owed on written promises to pay a specific sum of money at a future date.

Formal Promise

An official commitment or assurance, often in writing, to perform a specified action or uphold a certain condition.

Interest Payment

The amount paid over a period for borrowing money or delaying the repayment of a debt, typically expressed as an annual percentage of the principal.

Maturity Date

The date on which a financial obligation or investment becomes due for payment or expires, marking the end of its term.