Which of the following is the correct pathway for the drainage of tears through the nasolacrimal drainage system?

The correct pathway for the drainage of tears through the nasolacrimal drainage system is outlined accurately in the answer provided. Tears produced by the lacrimal glands flow across the surface of the eye and then enter the drainage system at the lacrimal puncta, which are small openings located in the inner corners of the eyelids.

From the lacrimal punctum, tears travel through the lacrimal canaliculus to the ampulla. The ampulla serves as a small reservoir before the tears continue into the lacrimal sac. The lacrimal sac is positioned in the medial orbital region, and it acts as a storage area for the tears before they drain into the nasolacrimal duct. Finally, the tears exit the nasolacrimal duct and flow into the nasal cavity through the valve of Hasner, which is at the end of the duct.

Understanding this pathway is crucial as it highlights the anatomical structures involved in tear drainage and the physiological process essential for maintaining proper eye lubrication and comfort. A disruption at any point in this pathway may result in conditions such as epiphora (excessive tearing) or dry eye syndrome.