Physiology Which of the following is the principal function of the bones (ossicles) of the middle ear? A They provide mechanical support for the flexible membranes to which they are attached (i.e., the eardrum and the oval window) B They reduce the amplitude of the vibrations reaching the oval window, protecting it from mechanical damage C They increase the efficiency of vibration transfer through the middle ear D They control the opening of the eustachian tubes and allow pressures to be equalized 💡 Explanation Which of the following is the principal function of the bones (ossicles) of the middle ear? ✓ Correct Answer: C. They increase the efficiency of vibration transfer through the middle ear