Biology

The Answers To 8 Burning Questions About Your Face

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There's a lot happening on your face. You're mouth and nose are breathing, your eyes are blinking, your skin is generating oils ... it's a busy place! But have you ever stopped to wonder why you have two nostrils? And what about eyebrows--what are THEY for?

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Key Facts In This Video

  1. About 8 out of 10 people have a nasal cycle, wherein one nostril is more swollen than the other. 00:30

  2. The nasal cycle allows the tiny hairs in the body's respiratory tract, called cilia, to recuperate. 01:12

  3. The nasal cycle increases the range of odors a nose can smell. 01:57

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Key Facts In This Video

  1. The vitreous in your eye is about 99% water and 1% collagen. 01:01

  2. Eye floaters are neutrally buoyant, so they don't actually float. 01:52

  3. Multiple new eye floaters and bright flashing lights could be symptoms of a retina that's about to detach. 03:20

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Share the knowledge!

Key Facts In This Video

  1. One nostril inhales and circulates air more efficiently than the other. 00:41

  2. Our bodies must constantly adjust how much smell we take in at once, as not to overload our senses. 04:47

  3. Smell and memories are closely linked. 05:34

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Share the knowledge!

Share the knowledge!

Key Facts In This Video

  1. The black spots on your nose aren't blackheads. 00:14

  2. Sebaceous filaments are collections of oil and dead skin that build up around tiny hair follicles. 01:18

  3. Squeezing blackheads out can cause inflammation, infection, and scarring. 02:00

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