鼻涙管
WordNet
- a continuous tube formed by a row of elongated cells lacking intervening end walls
- an enclosed conduit for a fluid
- a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance; "the tear duct was obstructed"; "the alimentary canal"; "poison is released through a channel in the snakes fangs" (同)epithelial duct, canal, channel
PrepTutorEJDIC
- 送水管;(建物・船などの)通気管;(地下ケーブルなどの)ダクト / (体液を運ぶ)導管,(植物が水・空気を運ぶ)導管
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2012/10/25 22:56:49」(JST)
[Wiki en表示]
Nasolacrimal duct |
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The lacrimal apparatus. Right side. |
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Outline of bones of face, showing position of air sinuses. |
Latin |
d. nasolacrimalis |
Gray's |
subject #227 1029 |
MeSH |
Nasolacrimal+Duct |
The nasolacrimal duct (sometimes called the tear duct) carries tears from the lacrimal sac into the nasal cavity. The opening of the nasolacrimal duct into the inferior nasal meatus is partially covered by a mucosal fold (valve of Hasner or plica lacrimalis). Excess tears flow through nasolacrimal duct which drains into the inferior nasal meatus. This is the reason the nose starts to run when a person is crying or has watery eyes from an allergy, and why one can sometimes taste eye drops.
Like the lacrimal sac, the duct is lined by stratified columnar epithelium containing mucus-secreting goblet cells, and is surrounded by connective tissue.
Obstruction of the nasolacrimal duct, known as dacryostenosis,[1] leads to the excess overflow of tears called epiphora. A congenital obstruction can cause cystic expansion of the duct and is called a dacrocystocele or Timo cyst. Persons with dry eye conditions can be fitted with punctal plugs that seal the ducts to limit the amount of fluid drainage and retain moisture.
The canal containing the nasolacrimal duct is called the nasolacrimal canal.
Contents
- 1 Additional images
- 2 See also
- 3 External links
- 4 References
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Additional images
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Roof, floor, and lateral wall of left nasal cavity.
See also
- Congenital lacrimal duct obstruction
- Dacrocystocele
- Lacrimal apparatus
External links
- SUNY Figs 33:04-09
- lesson9 at The Anatomy Lesson by Wesley Norman (Georgetown University)
References
- ^ Blocked tear ducts in infants, Pediatric Views, June 2006 http://www.childrenshospital.org/views/june06/blocked_tear_ducts.html
Head and neck anatomy – accessory visual structures (TA 15.2.7, TH H3.11.08.6, GA 10.1021)
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Eyelid |
- Tarsus
- Medial palpebral ligament
- Epicanthic fold
- Meibomian gland
- Ciliary glands
- Eyelash
- Palpebral fissure
- Canthus
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Lacrimal apparatus |
- Lacrimal lake
- Lacrimal gland
- Lacrimal canaliculi
- Lacrimal punctum
- Lacrimal papilla
- Nasolacrimal duct
- Lacrimal sac
- Lacrimal caruncle
- Krause's glands
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Other |
- Periorbita
- Orbital septum
- Tenon's capsule
- Suspensory ligament of eyeball
- Conjunctiva (Plica semilunaris)
- Extraocular muscles (Trochlea of superior oblique)
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anat(g/a/p)/phys/devp/prot
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UpToDate Contents
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English Journal
- Epiphora as the presenting sign of relapsed non-Hodgkin lymphoma in a child with Bruton agammaglobulinemia.
- Gokce G1, Ceylan OM, Uysal Y, Yildizoglu U, Atas E, Kurt B.
- European journal of ophthalmology.Eur J Ophthalmol.2014 Nov 11;25(1):65-7. doi: 10.5301/ejo.5000487. Epub 2014 May 8.
- PURPOSE: Primary or secondary infiltration of the lacrimal drainage system by a lymphoid neoplasm is rare in children. Primary immunodeficiencies are characterized by occurrence of unusual malignancies at unexpected locations in the pediatric age group.METHODS: Case report.RESULTS: A 12-year-old boy
- PMID 24832039
- The Etiology of Epiphora: A Multifactorial Issue.
- Nemet AY.
- Seminars in ophthalmology.Semin Ophthalmol.2014 Nov 6:1-5. [Epub ahead of print]
- Abstract Objectives: Epiphora (excess tearing) is a common complaint among patients visiting ophthalmology clinics. The etiology of epiphora in patients presenting to a primary ophthalmologist might be very different compared to those referred to an oculoplastic unit. Purpose: To describe the etiolo
- PMID 25375763
- Epiphora after Uncomplicated Phacoemulsification: Study of Prevalence and Associated Factors.
- Ruiz-Calvo A1, Troyano-Rivas JA, Martinez-Chico R, Romo-Lopez A.
- Seminars in ophthalmology.Semin Ophthalmol.2014 Nov 6:1-4. [Epub ahead of print]
- Abstract Purpose: To describe the prevalence of epiphora and associated factors after uncomplicated phacoemulsification. Methods: Prospective and descriptive design. A group of 125 patients was asked about tearing one to two weeks after cataract surgery. A comprehensive examination was performed on
- PMID 25375636
Japanese Journal
- 第2回 日本涙道・涙液学会 小児涙道疾患における鼻性鼻涙管狭窄の特徴
- 臨床 内視鏡下鼻内涙囊鼻腔吻合術を要したサルコイドーシス例
- 臨床研究 先天鼻涙管閉塞の自然治癒率および月齢18か月以降の晩期プローピングの成功率 : 後ろ向きコホート研究
Related Links
- The nasolacrimal duct (sometimes called the tear duct) carries tears from the lacrimal sac into the nasal cavity. Excess tears flow through nasolacrimal duct which drains into the inferior nasal meatus. This is the reason the nose starts to run ...
Related Pictures
★リンクテーブル★
[★]
- 英
- nasolacrimal duct (KH,Z)
- ラ
- ductus nasolacrimalis
- 関
- 涙器
[★]
鼻涙管
- 関
- nasolacrimal duct
[★]
- 関
- canal、conduit、ductal、ductus、meatus、pipe、tubal、tube、vas、vessel