Eustachian tube: It is a tube that emerges from the middle ear and connects to the nasopharynx.
Basilar membrane: It is present in the cochlea and helps divide the cochlea into three cavities.
Taste buds: These are the sense organ for the taste sensation occurring mainly on the surface of the tongue.
Auditory ossicles: These are three small pieces of bone known as malleus, incus, and stapes located in the middle ear. They are responsible for the transmission and amplification of vibrations.
Taste buds are the odd word out as it is not a part or present in the human ear.