WordNet

relating to or located near the organ that produces tears (同)lachrymal
of or relating to tears (同)lachrymal
a small canal or duct as in some bones and parts of plants

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=lachrymal / 涙腺(るいせん)の近くにある

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/01/30 08:58:58」(JST)

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The lacrimal canaliculi, also known as the lacrimal canals or lacrimal ducts, are the small channels in each eyelid that commence at minute orifices, termed puncta lacrimalia, on the summits of the papillae lacrimales, seen on the margins of the lids at the lateral extremity of the lacus lacrimalis.

The superior duct, the smaller and shorter of the two, at first ascends, and then bends at an acute angle, and passes medialward and downward to the lacrimal sac.

The inferior duct at first descends, and then runs almost horizontally to the lacrimal sac.

At the angles they are dilated into ampullæ. Able to be seen under microscope, they are lined by nonkeratinizing stratified squamous epithelium surrounded by fibrous tissue.

Outside the latter is a layer of striped muscle, continuous with the lacrimal part of the Orbicularis oculi; at the base of each lacrimal papilla, the muscular fibers are circularly arranged and form a kind of sphincter.

Clinical significance[edit]

Canaliculitis is an inflammation of the canaliculus.^[1]

References[edit]

^ Handbook of Ocular Disease Management - Molluscum Contagiosum

External links[edit]

lacrimal+canaliculus at eMedicine Dictionary

This article incorporates text from a public domain edition of Gray's Anatomy.

This article about the eye is a stub. You can help Wikipedia by expanding it.

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1. 小児における鼻涙管閉塞（涙管閉鎖症） nasolacrimal duct obstruction dacryostenosis in children
2. 持続性の流涙がみられる小児に対するアプローチ approach to the child with persistent tearing
3. まぶた裂傷 eyelid lacerations
4. 小児における顔面神経麻痺 facial nerve palsy in children
5. シェーグレン症候群の臨床症状：外分泌腺障害 clinical manifestations of sjogrens syndrome exocrine gland disease

English Journal

Reactive lymphoid hyperplasia of lacrimal canaliculus caused by a silicone plug.

Han JH, Park JW, Kim SC.Source*Department of Ophthalmology and Visual Science, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul; and †HanGil Eye Hospital, Incheon, Republic of Korea.
Ophthalmic plastic and reconstructive surgery.Ophthal Plast Reconstr Surg.2012 Nov;28(6):e138-40. doi: 10.1097/IOP.0b013e318249d406.
Complications of tumorigenesis by a lacrimal silicone plug are rarely reported and most of them were cases of granuloma due to chronic inflammation. The authors present a case of a 57-year-old healthy woman complaining of lower eyelid swelling and protruding mass from lower punctum who had undergone
PMID 22743697