The pharynx and the middle ear are connected to each other by the .........

Select the $CORRECT$ identification group of labelled parts $I, II, III$.

Which of the following is correct?

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?

The bone that is in contact with the oval window is:

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