How Does the Human Tear Duct Work?
General Overview The human tear ducts are small tubes stretching from the eye to the nose. They drain tears. It is officially known as the nasolacrimal duct that controls the flow of excess tears. The tear gland responsible for producing tears is located in the upper eyelid. The tear ducts that release the tears are located in the inner corner of the eye closest to the nose. Tears are an important method of keeping eyes clean and healthy. They also contain enzymes that destroy certain types of bacteria that may cause damage to the eye. How It Works The tear duct works by releasing tears into the eye when stimulated. When a person cries or feels a sharp pain, the tears are released instinctively. In actuality, tears are the body’s natural way of lubricating the eyes and keeping them clean of foreign substances. Tears also rid them of dirt and bacteria. The tear ducts release the liquid into the eyeballs between the eyelids. The tears flow down when the eyes blink, causing the liquid to
