Hair is a very important component of our bodies. Hair exists in some very unexpected places on our body. For example, our inner ear has hair to help with our sense of balance. Tiny hairs in our nose prevent dust and other particles from entering our lungs. To the left is some hair photographed on a piece of green felt, which was forcibly removed from somebody's head.
Hair comes in a variety of sizes, colors, and shapes.
There is a large difference between the hairs on top of your head and the hairs within your inner ear. The below pictures show the differences between straight and curly hairs, for the shape of the cross-sectional area determines the type of hair. They indicate a distance of fifty micrometers, one-twentieth of a millimeter in the scanned image. On your head, the average total number of hairs is between 100,000 and 150,000. We lose between 50 to 100 hairs a day.