A chain of three small articulated bones extends across the middle ear cavity and conducts vibrations from the tympanic membrane across the middle ear into the oval window and the fluid-filled inner ear.What are the names of those three small articulating bones?

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Quizplus · Accepted Answer

The malleus (hammer)consists of a head,neck,handle,and short process.The handle and short process are attached to the undersurface of the eardrum,and the head articulates with the body of the incus in the upper segment of the middle ear called the epitympanum or "attic." The incus (anvil)consists of a body and long and short processes.The distal end of the long process of the incus is called the lenticular process and articulates with the capitulum (head)of the stapes,which is the third,innermost bone.The stapes (stirrup)consists of a head,neck,anterior and posterior crura,and a mobile footplate that is secured to the oval window by an annular ligament.The movable joints between these ossicles contribute to a lever system that amplifies the received sound and transmits and converts vibrations from ambient air to the fluid of the inner ear.

A Chain of Three Small Articulated Bones Extends Across the Middle