Question

Ear ossicle, incus is modified

• A. Jugal bone
• B. Articular bone
• C. Quadrate bone
• D. Hyomandibular bone

Answer 1

The correct option is C Quadrate bone

Incus is one of the three ear ossicles (malleus, incus and stapes). It is present next to malleus. It is also known as anvil bone because of its resemblance with the shape of an anvil. In mammals, incus has evolved from quadrate bone which is a small bone present on the back side of upper jaw. Incus receives vibration from malleus and transfers them to stapes.

So, the correct answer is 'Quadrate bone'.