The primary purpose of tears is to clean and lubricate the eyes.Tears are secreted from the lacrimal glands through ducts to the surface of the eyes between the eyeball and the lid.The … [Read more...]
Why We Cry Emotional Tears
No mammal, apart from humans, sheds emotional tears, although most animals can produce tears when suffering pain.Only humans from birth to old age can respond to crises such as grief, laughter, … [Read more...]
