Which of the following lists the middle ear ossicles correctly?

• A. Pinna, External Auditory Canal, Tympanic Membrane
• B. Eustachian Tube, Pinna, Auditory Nerve
• C. Malleus, Incus, Stapes
• D. Cochlea, Semicircular Canals, Vestibule

Answer: (C)

The middle ear houses three tiny bones that form a lever system: the malleus (hammer), the incus (anvil), and the stapes (stirrup). When the eardrum vibrates in response to sound, these bones transfer and amplify the motion in sequence—from the malleus to the incus to the stapes—and push on the oval window of the cochlea, helping to convert air vibrations into fluid movement in the inner ear. This setup also helps overcome the impedance difference between air and the cochlear fluids. The other options mix structures from outside the middle ear or from the inner ear, or include non-bony parts, so they don’t name the actual middle-ear ossicles. Therefore, the correct list is the malleus, incus, and stapes.