Why do you have these .... Fart, Sneezing, Sweating and Tearing?

Fart

You fart sometimes and is completely normal. You swallow gases like oxygen and nitrogen while eating food. Some of them go through your digestive system during digestion. Also, carbon-dioxide, hydrogen and methane are produced in the large intestine due to the break down of the food eaten.

Hydrogen sulphide and ammonia gases combine with small portion of these gases there, adding bad smell to them. Then the accumulated gases in your digestive system escape out as Farts. Be alert!, it may be a signal that send you to the toilet.

Sneezing

Your nose is a gate way to your lungs. There are small hairs inside your nose. They can trap things like dust, pollen, cold air and dirt which irritate your nose. When it happens, a message about the irritation is send to the sneeze centre that locates in your brain. Then the sneeze centre send this message to all the muscles concern. These include: the eyelid muscle, the throat muscle, the vocal cord muscle, the chest muscle, the diaphragm muscle and the belly muscle. They cooperate and force out those unwelcome particles from your nose called Sneezing.

Sweating

Your body becomes uncomfortable when the temperature is above 98.6°F (37°C). So, one of the parts of your brain called hypothalamus sends a message to your skin to cool down. In response, sweat glands in the outer layer of your skin produce a lot of sweat.

These sweat leave your skin through tiny pores and thus you are Sweating. When the sweat meet the air and evaporate, you cool down. Normally, sweat has no smell. But when it mixes with the bacteria that dwell in the skin, it changes into smelly one.

Tearing

When you are frighten, sad or upset, your brain sends a message to your eyes to cry. The lacrimal glands situated above the outer corner of your eyes produce tears. Once your eyes are filled with tears, they drain out through the tear ducts which is located near the inside corner of your eyes. And so, you are Crying. If you cry too hard, tears run down your face as the tear ducts are unable to drain all of them.

Besides crying, your eyes water to protect themselves from :

• irritants like dirt in your eyes
• particles which make up smoke
• becoming too dry by cold wind
• tiny chemicals that can hurt while peeling or chopping onion

Other causes of tearing are: allergies, conjunctivitis, dry eyes and blocked tear ducts.

Posted by Jade Dame