Which Structure Is Not Considered to Be Part of the Membranous

question 9

Multiple Choice

Which structure is not considered to be part of the membranous labyrinth?

• A) Scala vestibuli
• B) Semicircular duct
• C) Saccule
• D) Cochlear duct
• E) Utricle

---

Definitions:

Security Characteristic Line

A line used in finance to represent the relation between the expected return of a security and the return of the market.

Single-Index Model

A financial model that describes the return of a security or portfolio as a linear function of the return of a single market index, accounting for both the market return and idiosyncratic factors.

Excess Returns

Returns on an investment that exceed the benchmark or risk-free return, indicating the extra value gained by taking on risk.

Index Model

A financial model that describes the return of a stock as a function of the return of a market index, plus residual factors unique to that stock.