The organ of Corti in a rabbit is concerned with the sense of

Which part of the human ear does not play a role in hearing but is essential for maintaining body balance?

The $Oval$ $Window$ (fenestra ovalis) is an opening of the .....

Which structure of the ear is responsible for the maintenance of the balance of the body?

$P$ is a continuous tubular structure. Inside these tubes, $Q$ is arranged.
$\quad\quad\quad P \quad\quad\quad Q$
$(A)$ $Scala \text{ vestibuli} \quad$ $Scala \text{ media}$
$(B)$ $Scala \text{ media} \quad$ $Scala \text{ tympani}$
$(C)$ $Scala \text{ tympani} \quad$ $Scala \text{ media}$
$(D)$ $Scala \text{ media} \quad$ $Scala \text{ vestibuli}$

The cochlea of the mammalian internal ear is concerned with: