"tear duct"的定义和意义

What is "tear duct"?

The tear duct, or lacrimal duct, is a delicate channel located near the inner corner of the eye. Its primary function is to transport tears from the surface of the eye to the nasal cavity. Tears, which contain water, salts, proteins, and antibodies, help keep the eyes lubricated and free from debris. The tear duct serves as a pathway for the drainage of tears, ensuring proper eye health and comfort. When we cry or experience emotional or physical stimulation, the tear duct plays a crucial role in releasing tears and allowing emotional release.