Skip to main content

Secret of Tears

Tears emerge from your lacrimal glands, which are under your eyelids and above your eyes. They spread across the surface of your cornea and drain from your eyes through tear ducts in the corners of your eyelids.
One person produces 15 to 30 gallons of tears per year.
If you’ve ever tasted your tears, you may have noticed how salty they are. Tears are salty because they are made from water from our body that contains electrolytes (salt ions)
Tears are 98% water. The remaining 2%, which is responsible for the salty taste, contain:
Oils
Salt
More than 1,500 proteins
Our bodies use electrolytes to create electricity that helps power our brains and move our muscles.
There are actually three kinds of tears
Basal tears – clean and lubricate your eyes
Reflex tears – which drain when your eyes are irritated by things like onions or pollen
Emotional tears – This one needs no explanation!
A baby who cries for more than 3 hours a day, more than 3 days a week, for more than 3 weeks may have colic, which is excessive crying without a known cause.
Do Tears Change During Sleep?
Tears change when we fall asleep. When you’re asleep, your tear ducts add less protein and water to your tears but boost antibodies. Cells that fight infection also move to your eye.
Your tears may also mix with oils, mucus, and skin cells while you sleep to make crusts in the corners of your eyes. Since you don’t blink when you’re sleeping, this mixture hardens in the corners of your eyes. It stays there until you wake up and blink.
Tear ducts can become blocked:
The ducts that drain tears from your eyes can become blocked due to ageing, infection, inflammation, injury, tumour, or cyst. A blocked tear means tears can't be drain properly, causing symptoms of excessive tearing and watery eyes. Blocked ducts can also increase risk of eye infection and inflammation.

Credits: Sabitha
Labels:

Comments

Post a Comment

Popular posts from this blog

WHY ATLANTIC AND PACIFIC OCEAN ARE NOT MIXED?

Nearly 72% of the earth is filled with water and it is present with different names- oceans, seas, rivers. Why are they named differently? There are five oceans namely Artic ocean, Atlantic Ocean, Pacific Ocean, Indian ocean and Antarctic ocean . All the oceans are different in their physical and biological character called ocean clines. When we look at the Atlantic and Pacific Ocean junction, they do not mix. Is there any invisible Wall in between them? Many scientists have conducted research to solve this mystery. The Atlantic and Pacific Ocean have different chemical composition. The salinity of the water in the Atlantic Ocean is five times more than the Pacific Ocean. The density of water is also different, so even marine animals in Atlantic Ocean will not go to the Pacific Ocean. They cannot survive in other oceans. Atlantic and Pacific Ocean meet at Cape Horn. The narrow straight line formed by the water bodies is called Drake Strait. The Pacific Ocean is
Post a Comment
Read more

World’s most Expensive Frog

The Poison Dart frog, which is 6cm long, is the world's most expensive animal. The worth of the frog is Rs 1.5 lakhs. It is expensive because of its poison and color. They are the most brightly colored frogs in the world. It is found in yellow, gold, copper, red, green, blue, golden, or black. Beneath its skin, it keeps its poison. The poison is called batrachotoxin. This type of frog is found in wet, tropical forests of Central and South America, where their diet contributes to the toxins they secrete through their skin. The Golden Poison Dart frog is the most toxic among them. The venom it has is enough to kill 10 grown men. It eats ants and small insects that have toxic chemicals in their bodies. The insects consume toxic plants, and the frog consumes the insects. If a Blue Poison Dart frog is touched, it does not cause death like a Golden Poison Dart frog. Instead, it causes immense pain, cramping, stiffness, serious swelling, nausea, and muscular paralysis.
1 comment
Read more

Blockchain Technology

Do you know who introduced the first Blockchain? Blockchain technology is a revolutionary technology that is popularly known as the Backbone of Digital Cryptocurrencies, which have been generating incredible hype in the last decade. Blockchain was introduced by the unknown persons behind the online cash currency bitcoin, under the pseudonym of Satoshi Nakamoto. Do you know why Blockchain was introduced? Blockchain allows participants of the network to perform mathematical verification and reach a consensus to agree on any particular value. While making a transfer, the sender uses their private key and announces the transaction information over the network. Blockchain technology can be used to create a Permanent, Public, transparent ledger system for compiling data on sales, tracking digital use, and payments to content creators, such as wireless users or musicians.                           Most people who lack familiarity with blockchain confuse it for a bitcoin; however, bitcoin is t
Post a Comment
Read more