Anatom3DLeft nasolacrimal duct
Ductus nasolacrimalis sinister · Levý slzovod
Sense organs
Looks like
A tube about 1.5 cm long running down from the tear sac through bone to open under the lower nasal concha.
What it does
Drains tears into the nose — why the nose runs when you cry.
Keeping it well
Often blocked at birth and opens by itself in most babies; in adults a block may need surgery (dacryocystorhinostomy).