Physiology

Which of the following is the principal function of the bones (ossicles) of the middle ear?

They provide mechanical support for the flexible membranes to which they are attached (i.e., the eardrum and the oval window)

They reduce the amplitude of the vibrations reaching the oval window, protecting it from mechanical damage

They increase the efficiency of vibration transfer through the middle ear

They control the opening of the eustachian tubes and allow pressures to be equalized