Region: Ear

Stapes (ossicle of ear)

Stapes (ossicle of ear) The ossicles of the ear are tiny little bones that are located in the middle ear. They are the smallest bone in the human body (the word itself actually means “little bone”) and their purpose is to transmit sound vibrations from the eardrum (tympanic membrane), to the complex inner ear structures, ultimately leading to the perception of sound. There are a series of three ossicles in the ear: malleus incus stapes. The malleus is attached to the tympanic membrane and articulates with the incus, which in turn articulates with the stapes. The stapes, attaches to the …

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Stapes

Lateral Semicircular Canal

Lateral Semicircular Canal The structure highlighted is the lateral semicircular canal. The ear consists of three anatomical components: External ear Middle ear Internal ear The internal ear consists of the bony labyrinth and the membranous labyrinth. The semicular canals are a component of the bony labyrinth, which consists also of the vestibule and the cochlea. These bony components contain a clear fluid known as perilymph. There are three semicircular canals: Anterior (superior) semicircular canal Posterior semicircular canal Lateral (horizontal) semicircular canal Each semicircular canal attaches to the vestibule and has one end that is enlarged to form the ampulla. The …

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Lateral Semicircular Canal

Malleus

Malleus The ossicles of the ear are tiny little bones that are located in the middle ear. They are the smallest bone in the human body (the word itself actually means “little bone”) and their purpose is to transmit sound vibrations from the eardrum (tympanic membrane), to the complex inner ear structures, ultimately leading to the perception of sound. There are a series of three ossicles in the ear: malleus incus stapes. The malleus is attached to the tympanic membrane and articulates with the incus, which in turn articulates with the stapes. The stapes, attaches to the membrane of the …

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Malleus