Tears are created in the main?

Tears are primarily produced in the lacrimal gland, which is responsible for the secretion of the watery component of tears. When you blink, the tears spread over the surface of the eye, helping to keep it moist and wash away any debris. The lacrimal gland is located above the outer corner of each eye and plays a crucial role in tear production, responding to both environmental factors and emotional stimuli.

While other structures like the nasolacrimal duct, conjunctiva, and cornea have roles related to tears, they do not initiate tear production. The nasolacrimal duct is involved in draining tears away from the eye into the nasal cavity. The conjunctiva provides a protective layer for the eye and can also hold some moisture, while the cornea is responsible for allowing light to enter the eye and helping with vision. Thus, the lacrimal gland is key in the formation of tears, making it the correct answer.