The Calcium Release Channel in the Smooth Muscle Sarcoplasmic Reticulum

question 30

Multiple Choice

The calcium release channel in the smooth muscle sarcoplasmic reticulum that is opened by increases in phospholipase C activity is the

• A) inositol trisphosphate (IP₃) receptor channel.
• B) ryanodine receptor.
• C) dihydropyridine (DHP) receptor.
• D) voltage-gated Ca²⁺ channel.
• E) Ca²⁺-ATPase.

---

Definitions:

Horizontal Analysis

A financial analysis technique that compares historical financial data over a series of reporting periods to identify trends and growth patterns.

Comparative Income Statements

Financial statements that present the revenues, expenses, and net income of a company over multiple periods for comparison.

Debt Management Ratios

Those ratios—debt to total assets, debt to stockholders’ equity, and times interest earned—which measure a company’s mix of debt and equity financing.

Equity Financing

The process of raising capital through the sale of shares in a company, leading to share ownership by investors.