Where do tears come from?

Where do tears come from?

Tears in your eyes are produced by glands. They're actually modified sweat glands. The main gland is up here, called the lacrimal gland, and that produces the tears which drain down through the tear duct and keeps your eye nice and moist. Then there's something called the colloquium, we call them the tear drainage ducts. We call it the lacrimal system. It drains tears from your eyes into your nose. That's why your eye doesn't overflow with tears. They just have to go somewhere. They go out the drain. In fact, the reason your nose runs when you cry is because as you cry those tears run down into your nose and make your nose run.