WordNet

of or characteristic of low rank or importance
one of lesser rank or station or quality
having an orbit between the sun and the Earths orbit; "Mercury and Venus are inferior planets"
lower than a given reference point; "inferior alveolar artery"
of low or inferior quality
a major thoroughfare that bears important traffic
a blood vessel that carries blood from the heart to the body (同)arteria, arterial blood vessel
of or relating to or situated in the larynx; "laryngeal infection"
either of two arteries that supply blood to the larynx (同)arteria laryngea

PrepTutorEJDIC

(階級・親分・質・程度などが)『下の』,『劣る』, / (位置が)低い,下方の / 目下の者;劣った人
動脈 / (道路・水路・鉄道などの)勘線,(通信の)主チャンネル
喉頭(こうとう)の;(音声が)喉頭音の

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/08/02 03:13:18」(JST)

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The inferior thyroid artery is an artery in the neck. It arises from the thyrocervical trunk and passes upward, in front of the vertebral artery and longus colli muscle. It then turns medially behind the carotid sheath and its contents, and also behind the sympathetic trunk, the middle cervical ganglion resting upon the vessel.

Reaching the lower border of the thyroid gland it divides into two branches, which supply the postero-inferior parts of the gland, and anastomose with the superior thyroid artery, and with the corresponding artery of the opposite side.

Structure

The branches of the inferior thyroid artery are the inferior laryngeal, the oesophageal, the tracheal, the ascending cervical and the pharyngeal arteries.

The inferior laryngeal artery climbs the trachea to the back part of the larynx under cover of the inferior pharyngeal constrictor muscle. It is accompanied by the recurrent nerve, and supplies the muscles and mucous membrane of this part, anastomosing with the branch from the opposite side, and with the superior laryngeal branch of the superior thyroid artery.

The tracheal branches of the inferior thyroid artery are distributed on the trachea, and anastomose below with the bronchial arteries.

The esophageal branches of the inferior thyroid artery supply the esophagus, and anastomose with the esophageal branches of the aorta.

The ascending cervical artery is a small branch which arises from the inferior thyroid artery as it passes behind the carotid sheath; it runs up on the anterior tubercles of the transverse processes of the cervical vertebrae in the interval between the anterior scalene muscle and the longus capitis. The ascending cervical artery gives twigs to the neck muscles and these anastomose with branches of the vertebral arteries. One or two spinal branches are sent into the spinal canal, through the intervertebral foramina to be distributed to the spinal cord and its membranes, and to the bodies of the vertebrae. It then anastomoses with the ascending pharyngeal and occipital arteries.

The pharyngeal branches of the inferior thyroid artery supply the pharynx.

The glandular branches of the inferior thyroid artery are small branches which directly supply the thyroid gland.

Clinical significance

The relationship between the recurrent laryngeal nerve and inferior thyroid artery is highly variable.^[1] The recurrent laryngeal nerve passes upward generally behind, but occasionally in front of, the inferior thyroid artery. This makes it vulnerable to injury during surgery that involves ligating the inferior thyroid artery, such as excision of the lower pole of the thyroid gland.

The injection of dye into the inferior thyroid artery can be used as an alternate method in identification the recurrent laryngeal nerve.^[2]

Additional images

The position and relation of the esophagus in the cervical region and in the posterior mediastinum. Seen from behind.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

^ Yalçin B (February 2006). "Anatomic configurations of the recurrent laryngeal nerve and inferior thyroid artery". Surgery 139 (2): 181–7. doi:10.1016/j.surg.2005.06.035. PMID 16455326.
^ Hepgul G, Kucukyilmaz M, Koc O, Duzkoylu Y, Sari YS, Erbil Y (2013). "The identification of recurrent laryngeal nerve by injection of blue dye into the inferior thyroid artery in elusive locations". Journal of Thyroid Research 2013: 539274. doi:10.1155/2013/539274. PMC 3563180. PMID 23401846.

External links

lesson5 at The Anatomy Lesson by Wesley Norman (Georgetown University) (antthyroidgland)
Yalçin B (February 2006). "Anatomic configurations of the recurrent laryngeal nerve and inferior thyroid artery". Surgery 139 (2): 181–7. doi:10.1016/j.surg.2005.06.035. PMID 16455326.
Anatomy photo:32:06-0100 at the SUNY Downstate Medical Center - "Larynx: Recurrent Laryngeal Nerve and Inferior Laryngeal Artery"

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. 甲状腺の外科解剖学 surgical anatomy of the thyroid gland
2. 副甲状腺の外科解剖学 surgical anatomy of the parathyroid glands
3. Initial thyroidectomy
4. 頸動脈内膜剥離術の合併症 complications of carotid endarterectomy
5. 上肢末梢動脈疾患の概要 overview of upper extremity peripheral artery disease

English Journal

The usefulness of preoperative computed tomography and intraoperative neuromonitoring identification of the nonrecurrent inferior laryngeal nerve.

Cai Q, Guan Z, Huang X, Yuan J, Pan Y, Zheng Y, Liang M, Fan S.SourceDepartment of Otolaryngology-Head and Neck, Affiliated Second Hospital, Sun Yat-sen University, 107, Yan Jiang West Road, 510120, Guangzhou, China, caiq163@126.com.
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 Jul;270(7):2135-40. doi: 10.1007/s00405-012-2336-5. Epub 2012 Dec 27.
The objective of this study was to avoid the nonrecurrent inferior laryngeal nerve (NRLN) injury during surgery, we performed preoperative CT examinations to determine the variation in abnormal course of the right subclavian artery as an indictor of the presence of the NRLN and used intraoperative n
PMID 23269396

Should we routinely expose recurrent laryngeal nerve(s) during thyroid surgery?

Ahmed M, Aurangzeb, Abbas S, Boota M, Ashfaq M, Rashid AZ, Qureshi MA, Iqbal N.SourceDepartment of Surgery, Military Hospital, Street 8, Valley Road, Rawalpindi. maqbool957@hotmail.com
Journal of the College of Physicians and Surgeons--Pakistan : JCPSP.J Coll Physicians Surg Pak.2013 Mar;23(3):186-9. doi: 03.2013/JCPSP.186189.
OBJECTIVE: To compare the frequency of recurrent laryngeal nerve(s) (RLNs) palsy after various thyroid procedures with and without identification of recurrent laryngeal nerve during the operation. STUDY DESign: Randomized controlled trial.PLACE AND DURATION OF STUDY: Department of Surgery, Military
PMID 23458040

Japanese Journal

非反回下喉頭神経を伴った甲状腺癌の1例

高良星乃,安慶名信也,喜友名朝則,真栄田裕行,鈴木幹男
喉頭 26(1), 28-31, 2014
… The incidence of the non-recurrent inferior laryngeal nerve is reported to be approximately 1% of the population. … The reason for laterality is a congenital abnormality of the right subclavian artery. … It is important for surgeons to be vigilant for non-recurrent inferior laryngeal nerve before thyroid and parathyroid surgery. …
NAID 130004839276

Three cases of esophageal cancer with aberrant right subclavian artery treated by thoracoscopic esophagectomy

Teshima Jin,Miyata Go,Kamei Takashi [他]
Esophagus : official journal of the Japan Esophageal Society 10(3), 165-169, 2013-09
NAID 40019794084

非反回下喉頭神経の術前診断 : CTおよび超音波検査の有用性

佐藤伸也,橘正剛,横井忠郎 [他],山下弘幸
日本耳鼻咽喉科學會會報 116(7), 793-801, 2013-07-20
【目的】今回, われわれは右側の非反回下喉頭神経 (NRILN) の術前診断においてのCTと超音波検査 (US) の有用性について検討した.【対象と方法】対象は2006年4月から2012年4月までにやましたクリニックで甲状腺手術を施行し, 術中に右下喉頭神経を確認した1,561例. 術前に頸胸部CTを1,086例に, 腕頭動脈分岐部確認目的の頸部USを140例に施行し, 右NRILNの診断における …
NAID 10031189747

Related Pictures

★リンクテーブル★

リンク元	「下喉頭動脈」
関連記事	「inferior」「inferio」「laryngeal」

「下喉頭動脈」

Inferior thyroid artery
	Thyrocervical trunk and its branches, including inferior thyroid artery. Superficial dissection of the right side of the neck.
	Human parathyroid glands
Details
Latin	Arteria thyreoidea inferior
Source	Thyrocervical trunk
Vein	Inferior thyroid veins
Supplies	Thyroid gland
Identifiers
Gray's	p.581
Dorlands; /Elsevier	a_61/12156378
TA	A12.2.08.043
FMA	10662
	Anatomical terminology