Question

Malleus, incus and stapes, the three ear ossicles are derived respectively from which of the following jaw bones?

• A. Articular, quadrate and hyomandibular
• B. Hyomandibular, quadrate and articular
• C. Quadrate, articular and hyomandibular
• D. Humerus, articular and squamosal

Answer 1

The correct option is A Articular, quadrate and hyomandibular

Three small bones present between the tympanic membrane and oval window are collectively referred to as ossicles, these are namely malleus, incus and stapes. In mammals, malleus is modified articular while incus is modified quadrate. Modified hyomandibular forms stapes.