lacrimal bone

同

lacrymal bone

同

lacrymal bone

WordNet

1. remove the bones from; "bone the turkey before roasting it" (同)debone
2. the porous calcified substance from which bones are made (同)osseous_tissue
3. consisting of or made up of bone; "a bony substance"; "the bony framework of the body"
4. a shade of white the color of bleached bones (同)ivory, pearl, off-white
5. rigid connective tissue that makes up the skeleton of vertebrates (同)os
6. having bones as specified; "his lanky long-boned body"
7. having had the bones removed; "a boneless rib roast"; "a boned (or deboned) fish" (同)deboned
8. relating to or located near the organ that produces tears (同)lachrymal
9. of or relating to tears (同)lachrymal
10. a percussion instrument consisting of a pair of hollow pieces of wood or bone (usually held between the thumb and fingers) that are made to click together (as by Spanish dancers) in rhythm with the dance (同)castanets, clappers, finger cymbals

PrepTutorEJDIC

1. 〈C〉骨 / 〈U〉骨を作っている物質,骨質 / 《複数形で》骨格;死骸(がい) / 〈魚など〉‘の'骨を取る
2. (魚など)骨を取り除いた / (衣服が)(コルセットなどで)骨で張りをつけた[ような]
3. =lachrymal / 涙腺(るいせん)の近くにある

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/06/28 20:12:12」(JST)

wiki en

[Wiki en表示]

Lacrimal bone, Tearbone
Position of the lacrimal bone (shown in green).
Medial wall of the orbit. Lacrimal bone is in yellow.
Details
Latin	os lacrimale
Identifiers
Gray's	p.164
TA	A02.1.09.001
FMA	52741
Anatomical terms of bone

The lacrimal bone or tearbone is the smallest and most fragile bone of the face; roughly the size of the little fingernail. It is situated at the front part of the medial wall of the orbit. It has two surfaces and four borders. Several bony landmarks of the lacrimal bone function in the process of lacrimation or crying. Specifically, the lacrimal bone helps form the nasolacrimal canal necessary for tear translocation. A depression on the anterior inferior portion of the bone, the lacrimal fossa, houses the membranous lacrimal sac. Tears or lacrimal fluid, from the lacrimal glands, collect in this sac during excessive lacrimation. The fluid then flows through the nasolacracrimal duct and into the nasopharynx. This drainage results in what is commonly referred to a runny nose during excessive crying or tear production.Injury or fracture of the lacrimal bone can result in posttraumatic obstruction of the lacrimal pathways.

Structure

Lateral or orbital surface

The lateral or orbital surface is divided by a vertical ridge, the posterior lacrimal crest, into two parts.

In front of this crest is a longitudinal groove, the lacrimal sulcus (sulcus lacrimalis), the inner margin of which unites with the frontal process of the maxilla, and the lacrimal fossa is thus completed. The upper part of this fossa lodges the lacrimal sac, the lower part, the nasolacrimal duct.

The portion behind the crest is smooth, and forms part of the medial wall of the orbit.

The crest, with a part of the orbital surface immediately behind it, gives origin to the lacrimal part of the Orbicularis oculi and ends below in a small, hook-like projection, the lacrimal hamulus, which articulates with the lacrimal tubercle of the maxilla, and completes the upper orifice of the nasolacrimal canal; the hamulus sometimes exists as a separate piece, and is then called the lesser lacrimal bone.

Medial or nasal surface

The medial or nasal surface presents a longitudinal furrow, corresponding to the crest on the lateral surface.

The area in front of this furrow forms part of the middle meatus of the nose; that behind it articulates with the ethmoid, and completes some of the anterior ethmoidal cells.

Borders

Of the four borders:

• the anterior articulates with the frontal process of the maxilla;
• the posterior with the lamina papyracea of the ethmoid;
• the superior with the frontal bone.
• The inferior is divided by the lower edge of the posterior lacrimal crest into two parts:
  • the posterior part articulates with the orbital plate of the maxilla;
  • the anterior is prolonged downward as the descending process, which articulates with the lacrimal process of the inferior nasal concha, and assists in forming the canal for the nasolacrimal duct.

Development

The lacrimal is ossified from a single center, which appears about the twelfth week in the membrane covering the cartilaginous nasal capsule.

Articulations

The lacrimal articulates with four bones: two of the cranium, the frontal and ethmoid, and two of the face, the maxilla and the inferior nasal concha.

Other animals

In early lobe-finned fishes and ancestral tetrapods, the lacrimal bone is a relatively large and robust bone, running from the orbit to the nostrils. It forms part of the side of the face, between the nasal bones and the maxilla. In primitive forms, it is often accompanied by a much smaller septomaxilla bone, lying immediately behind the nasal opening, but this is lost in most modern species. The lacrimal bone is often smaller in living vertebrates, and is no longer always directly associated with the nasal opening, although it retains its connection with the orbit. The bone is entirely absent in living amphibians, as well as some reptilian species.

Dinosaurs

In dinosaurs, the lacrimal bone usually defines the anterior rim of the orbit (eye socket), and the posterior rim of the antorbital fenestra. In some theropods (e.g. Allosaurus, Ceratosaurus, Albertosaurus) the upper part of the lacrimal bone grew in such a manner as to form a horn on the top of the dinosaur's head, usually situated above, and anterior to the eye. In many dinosaurs, the lacrimal bone comes into contact with the nasal bone, the jugal bone, the prefrontal bone, and the maxillary and premaxillary bones. The boundaries where some of these bones meet with the others are called sutures. Rarely, the lacrimal bones fused with the nasal bones to form a pair of "nasolacrimal" crests, which are present in dinosaurs such as Dilophosaurus, Megapnosaurus and Sinosaurus.

Additional images

• Position of the lacrimal bones (shown in green). Animation.

• Animation. Some bones are removed to show the position of the lacrimal bones (shown in green).

• Orbital bones. Lacrimal bone shown in green.

• A left lacrimal bone. Enlarged. Animation.

• Lacrimal bone

• Lacrimal bone

See also

This article uses anatomical terminology; for an overview, see anatomical terminology.

References

External links

• Atlas image: eye_5 at the University of Michigan Health System
• Atlas image: rsa2p4 at the University of Michigan Health System
• Anatomy diagram: 34256.000-1 at Roche Lexicon - illustrated navigator, Elsevier
• Diagram at upstate.edu

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

• 1. 骨パジェット病の臨床症状および診断 clinical manifestations and diagnosis of paget disease of bone
• 2. 骨転移を有する成人患者の疫学、臨床所見、診断、およびマネージメントの概要 overview of the epidemiology clinical presentation diagnosis and management of adult patients with bone metastasis
• 3. 小児癌患者の骨に関する問題 bone problems in childhood cancer patients
• 4. 慢性腎臓疾患に関連する無形成骨症 adynamic bone disease associated with chronic kidney disease
• 5. 乳癌、卵巣癌、およびその他の固形腫瘍からの骨転移患者に対する骨吸収抑制剤 osteoclast inhibitors for patients with bone metastases from breast prostate and other solid tumors

English Journal

• IgG4-related intracranial hypertrophic pachymeningitis with skull hyperostosis: a case report.

• Lin CK, Lai DM.AbstractBACKGROUND: Immunoglobulin G4 (IgG4)-related disease is a systemic syndrome, characterized by sclerosing lesions and usually associated with a raised serum IgG4 level; the pancreas, salivary glands, and lacrimal glands are typically affected. Recently, it has been suggested that IgG4-related sclerosing disease represents a subset of cases previously diagnosed as idiopathic hypertrophic pachymeningitis. This rare inflammatory disorder causes localized or diffused thickening of intracranial dura mater. Headache, cranial nerve palsy, and ataxia are the most common clinical manifestations.Herein, we report the clinical and histopathological features of a rare case of IgG4-related intracranial hypertrophic pachymeningitis involving cranial hyperostosis.
• BMC surgery.BMC Surg.2013 Sep 21;13(1):37. [Epub ahead of print]
• BACKGROUND: Immunoglobulin G4 (IgG4)-related disease is a systemic syndrome, characterized by sclerosing lesions and usually associated with a raised serum IgG4 level; the pancreas, salivary glands, and lacrimal glands are typically affected. Recently, it has been suggested that IgG4-related scleros
• PMID 24053604

• No thermal tool using methods in endoscopic dacryocystorhinostomy: no cautery, no drill, no illuminator, no more tears.

• Kim SY, Paik JS, Jung SK, Cho WK, Yang SW.SourceDepartment of Ophthalmology and Visual Science, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, 505 Banpo-dong, Seocho-ku, Seoul 137-701, Korea.
• European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery.Eur Arch Otorhinolaryngol.2013 Sep;270(10):2677-82. doi: 10.1007/s00405-013-2408-1. Epub 2013 Feb 27.
• The purpose of this study was to evaluate the surgical outcome of the endoscopic dacryocystorhinostomy (DCR) without thermal tools such as cautery, drill and illuminator. The study is a retrospective analysis of patients in a tertiary care unit for oculoplastic surgery. The participants enrolled int
• PMID 23443645

• Management of pure medial orbital wall fracture with autogenous bone graft.

• Pereira Rdos S, Jorge-Boos FB, Hochuli-Vieira E, da Rocha HV Jr, Homsi N, de Melo WM.SourceFrom the *Department of Surgery and Integrated Clinic, Araçatuba Dental School, Univ Estadual Paulista Júlio de Mesquita Filho-UNESP; and †Department of Diagnose and Surgery, Araraquara Dental School, São Paulo State University-UNESP, São Paulo; ‡Oral & Maxillofacial Surgery Division, General Hospital of Nova Iguaçu, Rio de Janeiro; and §Oral & Maxillofacial Surgery Division, Antônio Dias Regional Hospital-FHEMIG/SUS, Minas Gerais, Brazil.
• The Journal of craniofacial surgery.J Craniofac Surg.2013 Sep;24(5):e475-7. doi: 10.1097/SCS.0b013e318290330a.
• The orbit is an irregular conical cavity formed from 7 bones including the frontal, sphenoid, zygomatic, maxillary, ethmoid, lacrimal, and palatine bones. Fractures of the internal orbit can cause a number of problems, including diplopia, ocular muscle entrapment, and enophthalmos. Although muscle e
• PMID 24036819

Japanese Journal

• T型シートを用いた内視鏡下涙嚢鼻腔吻合術

• 日本鼻科学会会誌 55(4), 524-527, 2016
• NAID 130005435152

• Surgical approach to medial wall fracture of the orbit by osteotomy

• Acta Medica Kinki University 34(1), 35-39, 2009-06-01
• NAID 120005736763

• 鼻・副鼻腔 inverted papilloma に対する術式の検討

• 日本耳鼻咽喉科學會會報 111(8), 581-587, 2008-08-20
• NAID 10024371204

Related Links

• lacrimal bone - definition of lacrimal bone in the Medical ...

bone (bōn) 1. the hard, rigid form of connective tissue constituting most of the skeleton of vertebrates, composed chiefly of calcium salts. 2. any distinct piece of the skeleton of the body. ankle bone talus. basiotic bone a small bone ...

• Lacrimal bone | インターネット内の検索結果 | cyclopaedia.net

ウィキペディアの英語版でLacrimal boneという用語が挙げてありますが、そこでは、以下の意味で使われています。The lacrimal bone, the smallest and most fragile bone of the face, is situated at the front part of the medial wall of the orbit.

Related Pictures

---

★リンクテーブル★

リンク元	「涙骨」
関連記事	「lacrimal」「bone」

「涙骨」

　　[★]

英

lacrimal bone

ラ

os lacrimale

関

頭蓋

• 眼窩の内側を構成する上顎骨の後方に存在する
• 上顎骨の後部と共に涙嚢窩を形成する (M.489)

Henry Gray (1825-1861). Anatomy of the Human Body. 1918.

「lacrimal」

　　[★]

• adj.

• 流涙の、涙腺の

関

lacrimal gland、lacrimation

　 　 　

「bone」

　　[★] 骨