- Source: Lacrimal punctum
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
See also
Imperforate lacrimal punctum
Lacrimal apparatus
Punctal plug
References
This article incorporates text in the public domain from page 1028 of the 20th edition of Gray's Anatomy (1918)
External links
Diagram and discussion at aafp.org Archived 2011-10-20 at the Wayback Machine
Kata Kunci Pencarian:
- Air mata
- Sindrom Sjögren
- Lacrimal punctum
- Lacrimal canaliculi
- Lacrimal gland
- Punctum
- Imperforate lacrimal punctum
- Lacrimal apparatus
- Tears
- Nasolacrimal duct
- Lacrimal
- Nasolacrimal duct obstruction
