Question

In mammals, the middle ear ossicles from inside to outside are in the sequence of

• A. Stapes, incus, malleus
• B. Stapes, malleus, incus
• C. Incus, malleus, stapes
• D. Malleus, incus, stapes

Answer 1

The correct option is A Stapes, incus, malleus

The middle ear begins at the tympanic membrane and ends at a bony wall with two small openings namely oval window and round window. Three small bones present between the tympanic membrane and oval window are collectively referred to as ossicles; these are namely malleus, incus and stapes. The malleus is present towards the outside and adheres to the tympanic membrane while the stapes is in contact with the oval window.

Therefore, the correct answer is option A.