When the Heart Is Sympathetically Stimulated

question 9

Multiple Choice

When the heart is sympathetically stimulated,

• A) ESV will increase.
• B) It is responding to acetylcholine.
• C) It is responding to norepinephrine.
• D) Ca²⁺ channels are opening in greater numbers.
• E) It is responding to norepinephrine, and Ca²⁺ channels are opening in greater numbers.

---

Definitions:

Firm's Sales

The total revenue generated from goods or services sold by a company within a specific period.

Firm's Customers

Individuals or organizations that purchase and use the products or services offered by a business.

Usage Rate

The frequency at which a product is used by the consumer.

Subscription Basis

A payment model in which customers are charged a recurring fee at regular intervals for access to a product or service.