The ear ossicle 'incus' is a modified form of which bone?

Eustachian tube connects $A$ cavity with $B$. Choose the correct option for $A$ and $B$.

The stereocilia are projected from which part of the hair cell?

The organ of Corti is located in the .....

In humans, the receptors stimulated by sound waves are:

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?