Look up tears in Wiktionary, the free dictionary. In the animal world, it has been found that some blind mole rats rub tears all over their bodies as a strategy to keep aggressive mole rats away. This can have significant social consequences. There are three very basic types of tears: List of eye diseases and disorders.
Some of the substances in lacrimal fluid such as lysozyme fight against bacterial infection as a part of the immune system.
The crocodile tear syndrome.
This page was last edited on 30 Octoberat When the eyes blink, the lacrimal fluid is spread across the surface of the eye. Likewise, application of cocaine to the surface of the eye, due to its paralyzing effect on the sensory nerve endings, inhibits the reflex even under exposure to strong tear gases. When these receptors are activated, the lacrimal gland is stimulated to produce tears. On a study conducted by the Weizmann Institute of Science in RehovotIsrael, emotional tears from women have been found to reduce sexual arousal in men.