Have you ever cupped your hand behind your ear, hoping to hear a sound more clearly? By trying to increase the outer size of your ear, you were altering the ear shape to improve the sound that the inner workings could pick up. Ears come in all kinds of shapes and sizes, affecting the way you hear and even holding some clues to your overall well-being.
The outside portions of the ear are called pinnae or auricula. The shape of an ear helps it work the way a funnel does when it narrows down a liquid’s flow into a vessel. In the case of your ears, the outer part collects and amplifies sound waves, then directs them into the ear canal.
While ear shape and hearing quality aren’t always connected, ear size can matter. If you have an especially small ear canal, for example, it could have a negative effect on how much you’re able to hear.
The ears grow slowly as we age, and through time, many parts of our bodies are affected by the loss of collagen. When soft ear tissues lose collagen, they tend to droop and sag, also making them look bigger.
There are as many different ear shapes as there are people. However, scientists have isolated a number of general types of ear shapes, as described below.
Whether or not your earlobes are free or attached is another genetic factor. If parents' genes express the dominant allele, their child will be born with free earlobes.
But if parents with free earlobes give birth to a baby with attached earlobes, both will have a copy of the dominant and recessive allele. Attached earlobes are less common. The lobes of an attached ear are generally small, and they are attached directly to the side of the head.
If ears have not developed properly, that different ear shape could lead to complications, including everything from cosmetic issues to hearing and development problems. An estimated 1 in 3,800 children are born with types of ear shapes that indicate a congenital ear deformity.
These are some of the most common deformities of the human ear:
Congenital earlobe deformities can include clefts, duplicate earlobes, and earlobes with skin tags. “Frank's sign,” named after the doctor who first noticed it, is a diagonal crease in the lobe that may be a sign of heart disease.
If you’re curious about how your ear shape affects your hearing, talk to a hearing care professional and get a hearing test done. Miracle-Ear offers free, no-obligation hearing tests to help you discover any issues with your hearing.
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