Are tears an excretory product of human body?
Not really. Tears remove bad things that get into your eyes. They're really more of a cleaning fluid.
Tears are important for the health of our eyes! They are not a waste product, like urine. Special ducts containing cell types that secrete oils, water, and mucus produce tears. Interestingly, there are three different tear-types: Basal tears are continually produced and keep our eyes wet, nourished, and clear from dust. They also have antibacterial properties. Reflex tears result from eye irritants like foreign particles or onion vapor. (I just ate sushi for lunch with wasabi and my reflex tears were stimulated!) The third type of tears are crying or weeping tears that are produced from strong emotions (positive or negative) and physical pain. Crying tears, unlike the other tear-types, contain hormones.
Not really. Tears remove bad things that get into your eyes. They're really more of a cleaning fluid.
Tears are important for the health of our eyes! They are not a waste product, like urine. Special ducts containing cell types that secrete oils, water, and mucus produce tears. Interestingly, there are three different tear-types: Basal tears are continually produced and keep our eyes wet, nourished, and clear from dust. They also have antibacterial properties. Reflex tears result from eye irritants like foreign particles or onion vapor. (I just ate sushi for lunch with wasabi and my reflex tears were stimulated!) The third type of tears are crying or weeping tears that are produced from strong emotions (positive or negative) and physical pain. Crying tears, unlike the other tear-types, contain hormones.
