1. Blink once if you want me to pull the plug.
2. Why do we Cry?
Source: Medical News Today
There are 3 types of Tears
Basal: tear ducts constantly secrete basal tears. It is a protein-rich antibacterial liquid that help to keep the eyes moist every time a person blinks.
Reflex: These are tears come from irritants such as wind, smoke, or onions. They are released to flush out these irritants and protect the eye.
Emotional: Humans shed tears in response to a range of emotions. These tears contain a higher level of stress hormones than other types of tears.