WordNet

membranous tube with cartilaginous rings that conveys inhaled air from the larynx to the bronchi (同)windpipe
one of the tubules forming the respiratory system of most insects and many arachnids
tough elastic tissue; mostly converted to bone in adults (同)gristle
relating to or resembling or functioning like a trachea

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気管
軟骨[組織]

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/05/22 19:39:11」(JST)

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The cartilages of the trachea (or tracheal rings, C-shaped cartilaginous rings) vary from sixteen to twenty in number. Each forms a semicircular ring of hyaline cartilage, which occupies the anterior two-thirds or so of the circumference of the trachea. The posterior one-third of the trachea is completed by fibrous tissue and smooth muscle fibers.

Middle tracheal cartilages

The cartilages are placed horizontally above each other, separated by narrow intervals.

They measure about 4 mm in depth and 1 mm in thickness.

Their outer surfaces are flattened in a vertical direction, but the internal are convex, the cartilages being thicker in the middle than at the margins.

Two or more of the cartilages often unite, partially or completely, and they are sometimes bifurcated at their extremities.

They are highly elastic, but may become calcified in advanced life.

First and last tracheal cartilages

The peculiar tracheal cartilages are the first and the last.

The first cartilage is broader than the rest, and often divided at one end; it is connected by the cricotracheal ligament with the lower border of the cricoid cartilage, with which, or with the succeeding cartilage, it is sometimes blended.

The last cartilage is thick and broad in the middle, in consequence of its lower border being prolonged into a triangular hook-shaped process, which curves downward and backward between the two bronchi. It ends on each side in an imperfect ring, which encloses the commencement of the bronchus. The cartilage above the last is somewhat broader than the others at its center.

Additional images

Conducting passages.
Front view of cartilages of larynx, trachea, and bronchi.
Bronchi and bronchioles. The lungs have been widely separated and tissue cut away to expose the air-tubes.

External links

Histology at vetmed.wsu.edu
Atlas image: rsa3p2 at the University of Michigan Health System - "Larynx and trachea, lateral view"
"Cat Respiratory System " at kent.edu

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UpToDate Contents

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1. 気管の放射線学 radiology of the trachea
2. 胸腔内気道の先天異常および気管食道瘻 congenital anomalies of the intrathoracic airways and tracheoesophageal fistula
3. 成人における気管軟化症および気管気管支軟化症 tracheomalacia and tracheobronchomalacia in adults
4. 再発性多発性軟骨炎の臨床症状 clinical manifestations of relapsing polychondritis
5. 気管切開の概要 overview of tracheostomy

English Journal

Pulmonary artery sling: Current results with cardiopulmonary bypass.

Backer CL, Russell HM, Kaushal S, Rastatter JC, Rigsby CK, Holinger LD.SourceDivision of Cardiovascular Thoracic Surgery, Children's Memorial Hospital, Chicago, Ill; Department of Surgery, Northwestern University, Chicago, Ill.
The Journal of thoracic and cardiovascular surgery.J Thorac Cardiovasc Surg.2012 Jan;143(1):144-51. Epub 2011 Nov 3.
OBJECTIVE: We have used cardiopulmonary bypass with left pulmonary artery reimplantation for pulmonary artery sling repair since 1985. This review presents our current results with this technique, emphasizing the importance of diagnosis and treatment of frequently associated tracheal stenosis.METHOD
PMID 22050985

Japanese Journal

Fiberscopic Baloon Reduction under Local Anesthesia for Anterior Arytenoid Cartilage Dislocation Using a Tiemann Catheter

Watanabe Taisuke,Hirakawa Haruo,Nishi Yasuyuki,Tada Makoto
耳鼻咽喉科臨床　補冊 141(0), 84-85, 2015
… Arytenoid cartilage dislocation (ACD) is sometimes caused by tracheal intubation or laryngeal injury. …
NAID 130005077941

Chronological Assessment of Airway Lesions in Relapsing Polychondritis by Positron Emission Tomography

Ikeda Satoshi,Arita Machiko,Ikeo Satoshi,Nishiyama Akihiro,Ito Akihiro,Furuta Kenjiro,Hotta Machiko,Ishida Tadashi
Internal Medicine 54(9), 1099-1102, 2015
… Positron emission tomography (PET)-computed tomography (CT) showed high, diffuse F-18 deoxyglucose accumulation in the tracheal, peribronchial, and bilateral costal cartilage. …
NAID 130005068322

機能性食品に含まれるコンドロイチン硫酸の基原を推定するための簡易HPLC法

東恭平,岡本悠佑,真野貴 [他],和田竜哉,戸井田敏彦
日本食品化学学会誌 21(3), 187-194, 2014-12-24
コンドロイチン硫酸(CS)はグルクロン酸(GlcA)とN-アセチルガラクトサミン(GalNAc)との二糖繰り返し構造からなる直鎖状酸性多糖であり、変形性膝関節症の疼痛寛解等を目的に健康食品や医薬品として市場で多く流通している。CS-Aは[-4)GlcA(β1-3)GalNAc4S(β1-](A-type unit)を主成分とし哺乳類や鳥類の気管支軟骨に特徴的であり、一方CS-Cは[-4)GlcA( …
NAID 110009900887

Related Pictures

★リンクテーブル★

リンク元	「気管軟骨」
関連記事	「tracheal」

「気管軟骨」

Tracheal rings
	Tracheal cartilages labeled near center.
	Ligaments of the larynx. Posterior view. (Rings visiblea at bottom.)
Details
Latin	cartilagines tracheales
Identifiers
Gray's	p.1086
Dorlands; /Elsevier	c_12/12217233
TA	A06.3.01.004
FMA	71707
	Anatomical terminology