Answer;
Nasolacrimal duct
The runny nose you get when you cry is a result of your tears draining into the nasolacrimal duct.
Explanation;
The nasolacrimal duct is the duct that carries tears from the lacrimal sac of the eye into the nasal cavity.
Tears normally drain through small openings in the corners pf the upper and lower eyelids called puncta and then enters the nose through the nasolacrimal duct.
The puncta and the nasolacrimal duct are part of the nasolacrimal drainage system.
