👉 Ossicles are a group of bones that form the structures and organs in the middle ear, which are crucial for hearing. They include the two middle ear ossicles (the malleus and incus), the outer ear drum (the stapes), and the inner ear hair cells (the eustachian tube). The ossicles transmit sound waves to the inner ear through a process called resonance, which allows sound energy to be transferred from one part of the body to the other.