A small pouch at the inner corner of the eye that collects tears before they drain into the nose.
Structure
The sac is the upper expanded end of the nasolacrimal drainage system. Its wall has a thin epithelium overlying connective tissue, and it sits in a bony groove at the side of the nose.
Function
Blinking pumps tears through the canaliculi into the sac, and the sac empties through the nasolacrimal duct into the nose.
Clinical note
Blockage of the duct can cause tears to back up and the lacrimal sac to swell or become infected, a condition called dacryocystitis.
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Lacrimal Sac starts with L and ends with C. Browse other body parts along the same letter.
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