The outer ear is unique to mammals ... Gills and outer ears look and function quite differently from one another. They also do not mineralize, which means they are rarely recovered in the fossil ...

No outer ear existed in amphibians. The tympanum ... The evolution of the middle ear illustrates the changes in functions that can occur for a single structure.

These sounds can be measured by placing a sensitive microphone in the ear canal. They were called otoacoustic ... made to elongate and shorten by electrical stimulation. The function of the outer hair ...

The middle ear plays a crucial role in hearing by transmitting sound vibrations from the outer ear to the inner ear. Understanding its function and assessing its health is essential for diagnosing ...