How long is the cochlea when uncoiled?

The cochlea, when uncoiled, measures approximately 31 mm in length. This structure is a crucial part of the inner ear, responsible for converting sound vibrations into neural signals that the brain can interpret. The length of the cochlea is significant because it contributes to the range of frequencies that can be processed and the overall function of the auditory system. Understanding this measurement is essential for audiologists and hearing aid dispensers, as it helps in the design and fitting of hearing devices that accommodate the unique anatomy of individual patients.

The other measurements provided do not accurately reflect the anatomical reality of the cochlea's length. Each of those alternative lengths is either shorter or longer than the typical measurement, and they do not correspond to the known biological standards for cochlear length in humans.