The Ear

. Posted in HEALTHY BODY

As I already noted, the ear is connected to the sinuses through the eu - stachian tube. When the sinuses are inflamed, the eustachian tubes also become inflamed. Infections in the sinuses can pass into the ears through these tubes. Primary ear problems - such as recurrent ear infections, benign tumors, pain, noise, tinnitus, and dizziness - may be caused by sinus and nasal problems .

The ear is made up of three parts: the outer (external) ear, the middle ear, and the inner ear (0). Each part serves a particular function. The external ear is the part of the ear that you can see. It extends into the ear canal, which connects the outside world with the eardrum.

The external ear is covered with skin, which protects the external ear from infection, most notably swimmer’s ear. The external ear also produces cerumen, otherwise known as earwax. Regardless of what any well-intentioned parent might have told you, the external ear continuously removes the cerumen by itself, without your needing to use cotton swabs. And cerumen is actually good: It aids in fighting infection in the external ear.

The middle ear is the area behind the eardrum. You really can’t see the middle ear, but your doctor can determine if it is infected by the presence of fluid that he or she can see through the eardrum. As sound hits the eardrum, it moves three little bones in the middle ear - the malleus (hammer), the incus (anvil), and the stapes (stirrup) - to create a fluid wave into the inner ear.

The inner ear is made up of the cochlea, which is shaped like a snail, and the labyrinth, which is composed of three semicircular canals. The inner ear can’t be seen because it is encased in the temporal bone of the skull. The cochlea sends signals to the auditory nerve, which

transmits them to the brain and - prestol! - we can hear. The labyrinth also aids us with our sense of balance.

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