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Lacrimal sac
The
lacrimal sac
or
lachrymal sac
is the upper dilated end of the
nasolacrimal duct
, and is lodged in a deep groove formed by the
lacrimal bone
and
frontal process of the maxilla
. It connects the
lacrimal canaliculi
, which drain tears from the eye's surface, and the
nasolacrimal duct
, which conveys this fluid into the nasal cavity.
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