涙小管
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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2020/04/12 01:50:30」(JST)
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| Lacrimal canaliculi |
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The lacrimal ducts. Right side. |
| Details |
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| Identifiers |
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| Latin | canaliculus lacrimalis |
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| TA | A15.2.07.066 |
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| FMA | 58245 |
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| Anatomical terminology [edit on Wikidata] |
The lacrimal canaliculi, (sing. canaliculus), 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. They drain tears from the eye's surface into the nasal cavity.
- The superior duct, the smaller and shorter of the two, at first ascends, then bends at an acute angle, and passes medialward and downward to the lacrimal sac.
- The inferior duct at first descends, then runs almost horizontally to the lacrimal sac.
At the angles they are dilated into ampullæ. Able to be seen under a microscope, they are lined by nonkeratinizing stratified squamous epithelium surrounded by fibrous tissue.
Outside the latter is a layer of striated muscle tissue, 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
Canaliculitis is an inflammation of the canaliculus.[1]
Canalicular trauma may require special attention by a specialist trained in the repair of laceration.
See also
- Lacrimal apparatus
- Canaliculus (disambiguation)
References
This article incorporates text in the public domain from page 1028 of the 20th edition of Gray's Anatomy (1918)
- ^ Handbook of Ocular Disease Management - Molluscum Contagiosum Archived 2006-05-31 at the Wayback Machine
External links
The orbit of the eye |
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| Bones |
- Frontal bone
- Zygomatic bone
- Maxillary bone
- Sphenoid bone
- Ethmoid bone
- Palatine bone
- Lacrimal bone
|
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| Muscles |
- Superior rectus muscle
- Inferior rectus muscle
- Lateral rectus muscle
- Medial rectus muscle
- Superior oblique muscle
- Trochlea of superior oblique
- Inferior oblique muscle
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| Eyelid |
- Levator palpebrae superioris muscle
- Tarsus
- Medial palpebral ligament
- Epicanthic fold
- Meibomian gland
- Ciliary glands
- Eyelash
- Palpebral fissure
- Canthus
- Gland of Zeis
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| Lacrimal apparatus |
- Krause's glands
- Lacrimal canaliculi
- Lacrimal caruncle
- Lacrimal gland
- Lacrimal lake
- Lacrimal papilla
- Lacrimal punctum
- Lacrimal sac
- Nasolacrimal duct
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| Other |
- Eyebrow
- Conjunctiva
- Orbital septum
- Periorbita
- Suspensory ligament of eyeball
- Tenon's capsule
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UpToDate Contents
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- 1. 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 [show details]
…opening on the medial surface of each eyelid The punctum is the opening of the canaliculus, which drains into the common canaliculus and then into the lacrimal sac. There are two canaliculi for each eye. Tears …
- 2. 高抱合型ビリルビン血症関連の遺伝性疾患inherited disorders associated with conjugated hyperbilirubinemia [show details]
…bilirubin and other glucuronide or glutathione conjugated substances, are transported into the bile canaliculus from the hepatocyte by the multidrug resistance related protein, MRP2 (also known as the canalicular …
- 3. 小児における先天性鼻涙管閉塞（涙管閉鎖症）および涙嚢ヘルニアcongenital nasolacrimal duct obstruction dacryostenosis and dacryocystocele [show details]
…at the level of the membrane of Hasner. The proximal obstruction typically occurs in the common canaliculus or at the valve of Rosenmuller The proximal obstruction is a one-way valve that permits tears …
- 4. まぶた裂傷eyelid lacerations [show details]
…in each of the upper and lower eyelids). The upper and lower canaliculi join to form one common canaliculus which then drains into the lacrimal sac on the medial aspect of the orbit (lateral aspect of the…
- 5. ウィルソン病：疫学および病因wilson disease epidemiology and pathogenesis [show details]
…canalicular membrane. There is some suggestion that the ATP7B protein may itself localize to the canaliculus for the function of copper transport into bile; however, this is controversial. Disorders in copper…
English Journal
- Postoncological lacrimal duct reconstruction: A practical classification system for reconstructive planning and short-term results of a case series.
- van Burink MV, Rakhorst HA, van Couwelaar GM, Schmidbauer U.
- Journal of plastic, reconstructive & aesthetic surgery : JPRAS. 2018 Dec;71(12)1796-1803.
- Surgical resection of skin tumors in the medial canthal area may damage the lacrimal duct and can result in chronic epiphora. Postoncologic reconstruction of the lacrimal duct has not been studied extensively. The current study discusses the anatomical and functional features of the lacrimal duct. I
- PMID 30213744
- [Minimally invasive endoscopic surgery of the lacrimal drainage system--two case reports].
- Küstner M, Clemens S, Tost F.
- Klinische Monatsblatter fur Augenheilkunde. 2005 Nov;222(11)928-32.
- Dacryoendoscopy is a standard procedure to directly evaluate the lacrimal system. The existence and localisation of dacryostenosis and mucosal changes as well as rare diseases in the drainage system, such as intracanalicular foreign bodies or dacryoliths, can be reliably detected and treated by mini
- PMID 16308829
- [Foreign body granuloma after lower eyelid avulsion and surgical revision with silicone tube splint].
- Bär S, Hammer U, Struck HG, Stein A, Holzhausen HJ, Duncker GI.
- Klinische Monatsblatter fur Augenheilkunde. 2000 Apr;216(4)232-4.
- Foreign-body-reactions with granulomas after use of silicone-containing biomaterials are of clinical importance [4]. A 4-year old patient entered our hospital with a reddish vascularised tumor. The tumor's origin was in the conjunctiva of the nasal lid-angle of the right eye. After a traumatic disco
- PMID 10820710
Japanese Journal
- 涙小管結膜吻合による涙道再建を行った脂腺上皮腫の1例 : われわれが用いた術式とその工夫
- 前田 尚吾,上田 晃一,高橋 猛,大谷 一弘
- 日形会誌 : 日本形成外科学会会誌 = Journal of Japan Society of Plastic and Reconstructive Surgery 32(6), 412-415, 2012-06-20
- NAID 10030792811
- ニホンカモシカ(Capricornis crispus)の骨格に関する研究-4-頭蓋(頭蓋骨・顔面骨)について
- 松尾 信一,森下 芳臣
- 信州大学農学部紀要 22(2), p99-138, 1985-12
- ニホンカモシカの骨格の形態学的研究の一環として，前肢骨，後肢骨，胴骨(脊椎・肋骨・胸骨)に引き続き，今回は頭蓋について調査研究を行い，図譜を作成した。1.カモシカの頭蓋は頭蓋骨と顔面骨よりなり，頭蓋骨は後頭骨，頭頂間骨，底蝶形骨，前蝶形骨，翼状骨，側頭骨，頭頂骨，前頭骨，篩骨および篩骨および鋤骨から，顔面骨は鼻骨，涙骨，上顎骨，腹鼻甲介骨，切歯骨，口蓋骨，頬骨，下顎骨および舌骨から構成されていた。 …
- NAID 120001087742
Related Links
- The lacrimal canaliculi (also lacrimal ducts, singular: lacrimal canaliculus, latin: canaliculus lacrimalis) are small channels between the puncta lacrimalia and the lacrimal sac that participate in the tear-drainage system of the lacrimal apparatus. ...
- bile canaliculi fine tubular channels forming a three-dimensional network within the parenchyma of the liver. They join to form the bile ductules and eventually the hepatic duct. lacrimal canaliculus the short passage in an eyelid, beginning at the lacrimal point and draining tears from the lacrimal lake to the lacrimal sac; called also lacrimal duct.
- 1 Definition Unter einer Canaliculitis versteht man eine Entzündung der Tränenkanälchen (Canaliculus superior oder inferior), z.B. durch Infektion mit Pilzen, Bakterien oder Viren.Am häufigsten ist eine Infektion mit Actinomyces israelii (anaerob und gram-positiv) der Auslöser. ...
★リンクテーブル★
[★]
- 英
- lacrimal canaliculus
- ラ
- canaliculus lacrimalis
- 関
- 涙器
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- 関
- lacrimal gland、lacrimation