Final answer:
The three small bones bound within the middle ear are the malleus, incus, and stapes. They transmit sound vibrations from the air to the fluid-filled cochlea. These bones are also known as the auditory ossicles.
Step-by-step explanation:
The three small bones bound within the middle ear are the malleus, incus, and stapes. These bones, also known as the auditory ossicles, play a crucial role in transmitting sound vibrations from the air to the fluid-filled cochlea in the inner ear. The malleus (or hammer), incus (or anvil), and stapes (or stirrup) work together to amplify and transmit sound waves, allowing us to hear.