Lacrimal punctum

Lacrimal punctum

Infobox Anatomy
Name = PAGENAME
Latin =
GraySubject = 227
GrayPage = 1028


Caption = The tarsal glands, etc., seen from the inner surface of the eyelids. (Puncta lacrimalia visible at center left.)


Caption2 = The lacrimal apparatus. Right side. Note outdated terminology: The "Lacrimal ducts" in Gray's are now called "Lacrimal canals".
System =
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DorlandsPre = p_42
DorlandsSuf = 12680460
The lacrimal canaliculi, one in each eyelid, commence at minute orifices, termed puncta lacrimalia (or lacrimal punctum, or lacrimal point), on the summits of the papillae lacrimales, seen on the margins of the lids at the lateral extremity of the lacus lacrimalis. There are two lacrimal puncta in the medial (inside) portion of each eye.

Together, they function to collect tears produced by the lacrimal glands. The fluid is conveyed to the lacrimal sac, and thence via the nasolacrimal duct to the inner nose.


=Additional

ee also

*Imperforate lacrimal punctum
*Lacrimal apparatus

External links

* [http://www.aafp.org/afp/980600ap/carter.html Diagram and discussion at aafp.org]


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  • Lacrimal papilla — Infobox Anatomy Name = PAGENAME Latin = papilla lacrimalis GraySubject = 227 GrayPage = 1025 Caption = Front of left eye with eyelids separated to show medial canthus. (Lacrimal papilla not labeled, but region visible.) Caption2 = System =… …   Wikipedia

  • punctum lacrimale — [TA] lacrimal point: the opening on the lacrimal papilla of an eyelid, near the medial angle of the eye, into which tears from the lacrimal lake drain to enter the lacrimal canaliculi …   Medical dictionary

  • punctum — n.; pl. puncta (in anatomy) a point or small area, especially the puncta lacrimalia – the two openings of the tear ducts in the inner corners of the upper and lower eyelids (see lacrimal apparatus) …   The new mediacal dictionary

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