How the Ear Works

This is an amazing system!

The ear is a pretty fascinating piece of human machinery. It is simple yet complicated with many parts that work together to give you the ability to hear. There are three main parts of the ear. The outer ear, the middle ear and the inner ear. These three parts work together and gives us the ability to hear the sounds in our daily lives. The outer ear being that protruding curvature on the side of your head and it works to catch and funnel sound along the ear canal, to the eardrum also known as the tympanic membrane.

And There is More!

As sound travels down the canal it puts pressure on the drum causing a vibration which then activates the tiny bones in your ear. Your middle ear consists of three bones. The malleus, the incus and the stapes. The three smallest bones in your body with the stapes being the smallest. I would not let the size of these bones lead you to believe they are not important because that would be far from the truth. These three bones shaped almost like a wish bone from a turkey act as a pulley system. As sound puts pressure on the ear drum the malleus bone is moved and the malleus sort of pushes back against the ear drum in a vibratory fashion causing the incus to move and as the incus is connected to the stapes the stapes is put into motion.

Once the stapes has moved it activates the inner ear. The inner ear is where all the magic takes place and sound is transferred to the brain. The inner ears consist of the Cochlea and the auditory nerved. The stapes push against the cochlea which is a spiral shaped structure filled with liquid and cover by microscopic hair cells.  Liquid moves and the hair cells along the cochlea are stimulated and they produce an electrical signal that the brain interprets via the auditory nerve which connects the ear to the brain. Once the brain processes this electrical signal, we enter the world of perceived sound.

The System is even Better!

But wait, it gets better, the ears are not only for the betterment of our hearing. Our hearing helps to regulate balance and give us that equilibrium we need so that we are not falling all over the place. There are three semicircular canals in the inner ear and they work to help orientate us. These canals send signals to the brain about our head position and body movement in regards to gravity and thus we remain upright and able to walk in straight lines. Human hearing is an intricate design and one that we can understand and appreciate.

Come to chears where we can help you figure out if your hearing is lower than it should be.

Reach us today as you know it, hearing is important!  952 767 0672,

Jeffery B.

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