Hearing, Hearing Loss and the Human Ear Hearing Test Hearing Frequencies Hearing Loss and Earbuds Teen Hearing Stats Hearing Loss Prevention The Human Ear Outer, Middle and Inner Ear

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Hearing Test Humans can generally hear from 20Hz to 20kHz. See where you fall As we age we lose the ability to hear high frequencies. Click the image to the right to see if you can hear the higher frequencies How old are your ears? Please note that the video and test links have been removed on this sample. In the full version you simply open the lesson in slideshow mode and click the image.

Hearing Frequencies Many animals can hear sounds a human cannot For example “dog whistles” make a sound higher than humans can hear.

Hearing Loss and Earbuds There are many ways to lose your hearing such as disease, trauma, aging, etc., but the most common cause of ___________ Earbuds are especially bad since it sends the sounds directly into the ear In slideshow mode, click the video images below and your video will automatically open in your browser.

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Teen Hearing Stats ___________ 9/10 listen to music too loudly for to long The American Speech-Language-Hearing Association found that ………………

Prevention _________ Turn down the volume! See a doctor if you experience any ringing in your ears Stay away from speakers at concerts ………………….

The Human Ear – The Anatomy of Hearing The human ear consists of three basic parts: The Outer Ear The Middle Ear The Inner Ear

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The Middle Ear __________ The eardrum is less than 0.1 mm thick Sound causes the eardrum to vibrate

The Middle Ear Continued There are three connected bones which attach to the eardrum ___________ These bones increase the sound and pass it on to the middle ear

The Middle Ear Continued The middle ear is filled with air …………….. Pressure can buildup in the middle ear during altitude changes causing pain ___________

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The Inner Ear The waves cause the movement of microscopic hairs inside the cochlea Similar to grass moving in the wind __________ The brain interprets these signals as sound