Question

Identify 1, 2, 3 and 4 in the given image.

• A. 1 - Malleus, 2 - Stapes, 3 - Incus, 4 - Tympanum
• B. 1 - Malleus, 2 - Incus, 3 - Stapes, 4 - Tympanum
• C. 1 - Stapes, 2 - Malleus, 3 - Incus, 4 - Tympanum
• D. 1 - Malleus, 2 - Incus, 3 - Tympanum, 4 - Stapes

Answer 1

The correct option is B 1 - Malleus, 2 - Incus, 3 - Stapes, 4 - Tympanum

Tympanum or ear drum forms the first part of the middle ear, it continues into the tympanic cavity which contains three tiny bones: malleus, incus, and stapes. These bones were given their names based on their distinct shapes. They are also referred to as the hammer, anvil, and stirrup, respectively. Their main function is to receive the sound waves from the tympanum, amplify them and transmit them to the oval window which directs the sound to the cochlea in the inner ear.