Lacrimal punctum
| Lacrimal punctum | |
|---|---|
| File:Gray895.png The tarsal glands, etc., seen from the inner surface of the eyelids. (Puncta lacrimalia visible at center left.) | |
| File:Gray896.png The lacrimal apparatus. Right side. Note outdated terminology: The "Lacrimal ducts" in Gray's are now called "Lacrimal canals". | |
| Details | |
| Identifiers | |
| Latin | puncta lacrimalia |
| TA98 | Lua error in Module:Wikidata at line 746: attempt to index field 'wikibase' (a nil value). |
| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terminology [[[d:Lua error in Module:Wikidata at line 865: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]] | |
The lacrimal punctum (pl.: puncta) or lacrimal point is a minute opening on the summits of the lacrimal papillae, seen on the margins of the eyelids at the lateral extremity of the lacrimal lake. There are two lacrimal puncta in the medial (inside) portion of each eyelid. Normally, the puncta dip into the lacrimal lake.
Together, they function to collect tears produced by the lacrimal glands. The fluid is conveyed through the lacrimal canaliculi to the lacrimal sac, and thence via the nasolacrimal duct to the inferior nasal meatus of the nasal passage.
Additional images
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A close up of a lacrimal punctum. -
Lower lacrimal punctum through slit lamp biomicroscope
See also
[edit | edit source]References
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This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
External links
[edit | edit source]- Diagram and discussion at aafp.org Archived 2011-10-20 at the Wayback Machine
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