Identify the correct sequence of ear ossicles from the outer ear to the inner ear.

Which sensory organ is involved in vertigo (sensation of one self or objects spinning around)?

The main function of the $Eustachian$ tube is to

What are the functions of the ear?
$I -$ Hearing
$II -$ Analysis of impulses
$III -$ Body balance
$IV -$ Olfaction

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

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