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The human nose can detect 10,000 distinct smells.
It's constantly bathed in a mixture of smells. Odor molecules
dissolve in the mucus lining within the nasal cavity. On surface
of the mucous membrane, there millions of smell receptors. Each
receptor detects one specific smell. Once the right smell attaches
to the corresponding receptor, an electrical signal is sent straight
to the emotional part of the brain. This causes us to associate
certain smells with certain emotions or memories.
Nose
Piercing
The nose is surrounded by cartilage, making it
a slow healer and more vulnerable to scarring and infection. Nose
piercing is not medically recommended.
Sniffing or snorting
drugs can create a painful ulcer in your nasal septum.
Working long hours with
chemicals that create fumes can kill your sense of smell.
Using inhalants could
kill you instantly on the first try!
In short, try to avoid all of the above.
- The air from a sneeze travels at almost
100mph.
- Tears enter tiny holes on the inside corner
of the eye, travel down the lachrymal duct and into the nose causing
you to sniffle when you cry, or to sniffle when cold wind causes
more lubrication of the eye.
Nervous
System
Respiratory
System
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