MEDICAL PHYSIOLOGY

PHYSIOLOGY

CENTRAL NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When the eardrum vibrates, it moves a set of bones called ____
A
ossicles
B
muscles
C
blood vessels
D
None of the above
Explanation: 

Detailed explanation-1: -The eardrum vibrates. The vibrations are then passed to 3 tiny bones in the middle ear called the ossicles. The ossicles amplify the sound. They send the sound waves to the inner ear and into the fluid-filled hearing organ (cochlea).

Detailed explanation-2: -The vibrations from the eardrum set the ossicles into motion. The ossicles are actually tiny bones-the smallest in the human body. The three bones are named after their shapes: the malleus (hammer), incus (anvil) and stapes (stirrup). The ossicles further amplify the sound.

Detailed explanation-3: -The ossicles (also called auditory ossicles) are three bones in either middle ear that are among the smallest bones in the human body. They serve to transmit sounds from the air to the fluid-filled labyrinth (cochlea). The absence of the auditory ossicles would constitute a moderate-to-severe hearing loss.

Detailed explanation-4: -The eardrum vibrates from the incoming sound waves and sends these vibrations to three tiny bones in the middle ear. These bones are called the malleus, incus, and stapes.

Detailed explanation-5: -The auditory ossicles transmit vibrations of the tympanic membrane through the middle ear to the oval window. At the oval window, a wave is generated to move the fluid in the internal ear, which will excite receptor cells and allow these mechanical vibrations to be transferred into electrical signals.

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