Which maintains static equilibrium?

The lower membrane of the $scala$ $vestibuli$ is the:

Hearing in $rabbit$ is better than $frog$. One reason for this is that $rabbit$ has

Given below is a diagrammatic cross-section of a single loop of the human cochlea. Which one of the following options correctly represents the names of three different parts?

What is the primary function of the semicircular canals of the inner ear?

The ear ossicles in the human ear are: