Tears are produced by tear glands which are small glands inside the eyelid. Tears keep the surface of eyeball clean and moist. They help to protect the eye from damage. The eyelids spread the tears over the surface of the eye. Tears flow down a tiny tube at the edge of lower eyelid, next to your nose. This tube carries the tears to the back of the nose. This is why the nose ‘runs’ when you cry.
Where do Tears Come From?
