Tears

I'm sure that most of us had been experienced with tears but do you understand what it is actually all about? Tears or its scientific name is lacrimal secretion which is a dilute saline solution. It consist of lacrimal fluid that contain mucus, antibodies and lysozyme(enzyme that destroys bacteria). Thus, it helps our eye in order to cleanses and protects the surface as it moistens & lubricates it. Tearing happens when the eyes are irritated in order to wash away or dilute the irritating substances while the importance of emotionally induced tears is poorly understood.

However, the other interesting fact about tears is when you cry, it is just not only tears will drop out, do you ever realize that you also experience "running nose"? Look into the mirror and try to find lacrimal puncta ( tiny red dots on the medial margin of each eyelid). They are two tiny opening which your tears will enter via them into lacrimal sac and then into nasolacrimal duct which empties into the nasal cavity( inside your nose).That is the cause for congestion and the "sniffles".