The passage connecting the middle ear to the pharynx is called ....

Which of the following senses is impaired if the tectorial membrane is removed from a rabbit?

The ear ossicles in the human ear are:

The organ of Corti is located in the:

The middle ear and Eustachian tube of a rabbit are derived from.....

Structures filled with perilymph - $P$
Structures filled with endolymph - $Q$
$I -$ Scala vestibuli,$II -$ Scala tympani,$III -$ Scala media
Select the correct option for $P$ and $Q$.
$P \quad\quad Q$