The part of the ear where sound is transduced is:

Below is the diagram of the sectional view of the cochlea of the human ear. Identify $A$ and $E$. Choose the correct option.

The fluid-filled inner ear is called .......

The chief function of the utriculus in vertebrates is

The $Organ \ of \ Corti$ is located on the . . . . . . .

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?