The internal ear of a rabbit is derived from which of the following germ layers?

Arrange the following in the order of reception and transmission of sound wave from the ear drum. Cochlear nerve,External auditory canal,ear drum,stapes,incus,malleus,cochlea.

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

Reissner's membrane separates $ \text{scala vestibuli} $ and $ \text{scala media} $.

The membranous labyrinth is surrounded by a fluid called

The fluid that fills the membranous labyrinth of the rabbit is called .....