Have you noticed that when people cry, they get the sniffles? When we yawn, our eyes make tears, and we find our nose becomes runny.
That is because of the lacrimal duct. The lacrimal duct drains the tears from the eyes to the nose.
The images below show the lacrimal duct connecting the eye to the nose.
The image below shows the nasolacrimal duct draining to the nose.
The respiratory tract includes the nose, throat, and lungs. Inside the nose, there are cilia on top of the cells. The cilia are tiny, tiny hairs that protect the respiratory tract.
They move together to remove the dirt and germs on top of them. Just like crowd surfing. That dirt eventually comes out like snot.
Once the coronavirus enters the nose thru the nasolacrimal duct, it destroys the cilia of the nose. The nose loses its protection, and the coronavirus will hang around, multiply, and spread to the lungs. Eventually causing pneumonia.
When someone sneezes or coughs, a virus can stay suspended in the air for 10 minutes. If you walk into that “cloud” of germs, some viruses can stick to the eyes and later on drain into the nose. That is why the hospital workers in Wuhan wear eye goggles.
In a news article from Mirror, Dr. Wang Guangfa contracted the virus and has survived. He thinks he got the virus because he was not wearing goggles.
That is why it is a good idea to invest in some eye protection.
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Don’t Get Sick!
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References:
Chilvers et al. The effects of coronavirus on the human nasal ciliated respiratory epithelium. Eur Respir J. 2001 Dec;18(6):965-70.
Image Credits:
- Nasolacrimal duct By Henry Vandyke Carter – Henry Gray (1918) Anatomy of the Human Body (See “Book” section below)Bartleby.com: Gray’s Anatomy, Plate 896, Public Domain, https://commons.wikimedia.org/w/index.php?curid=566836
- By Henry Vandyke Carter – Henry Gray (1918) Anatomy of the Human Body (See “Book” section below)Bartleby.com: Gray’s Anatomy, Plate 1199, Public Domain, https://commons.wikimedia.org/w/index.php?curid=564811
- Crowd surfing By Ibrahim Iujaz – Flickr, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=3405870
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