下咽頭収縮筋
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
- become tight or as if tight; "Her throat constricted" (同)constringe, narrow
- any of various large nonvenomous snakes that kill their prey by crushing it in its coils
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
- 〈物など〉'を'締めつける,圧縮する
- 括役筋・周縮筋 / 獲物を締め殺ず大蛇(ぼあなと)
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/09/17 02:10:16」(JST)
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This article relies largely or entirely upon a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources. (July 2013) |
Inferior pharyngeal constrictor muscle |
Muscles of the pharynx and cheek. (Constrictor pharyngis inferior visible at bottom left.)
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Muscles of the pharynx, viewed from behind, together with the associated vessels and nerves. (Inf. const. labeled at bottom center.)
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Details |
Latin |
musculus constrictor pharyngis inferior |
Origin |
cricoid and thyroid cartilage |
Insertion |
pharyngeal raphe |
Nerve
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Pharyngeal plexus of vagus nerve |
Actions |
Swallowing |
Identifiers |
Gray's |
p.1142 |
Dorlands
/Elsevier |
m_22/12548631 |
TA |
A05.3.01.111 |
FMA |
46623 |
Anatomical terms of muscle |
The Inferior pharyngeal constrictor, the thickest of the three constrictors, arises from the sides of the cricoid and thyroid cartilage. Similarly to the superior and middle pharyngeal constrictor muscles, it is innervated by the vagus nerve (cranial nerve X), specifically, by branches from the pharyngeal plexus and by neuronal branches from the recurrent laryngeal nerve.
Contents
- 1 Origin and insertion
- 2 Action
- 3 Role in human disease
- 4 See also
- 5 Additional images
- 6 References
- 7 External links
Origin and insertion
The muscle is composed of two parts. The first (and more superior) arising from the thyroid cartilage (thyropharyngeal part) and the second arising from the cricoid cartilage (cricopharyngeal part).[1]
- On the thyroid cartilage it arises from the oblique line on the side of the lamina, from the surface behind this nearly as far as the posterior border and from the inferior cornu.
- From the cricoid cartilage it arises in the interval between the Cricothyreoideus in front, and the articular facet for the inferior cornu of the thyroid cartilage behind.
From these origins the fibers spread backward and medialward to be inserted with the muscle of the opposite side into the fibrous pharyngeal raphe in the posterior median line of the pharynx.
The inferior fibers are horizontal and continuous with the circular fibers of the esophagus; the rest ascend, increasing in obliquity, and overlap the Constrictor medius.
Action
As soon as the bolus of food is received in the pharynx, the elevator muscles relax, the pharynx descends, and the constrictors contract upon the bolus, and convey it downward into the esophagus.During deglutination,they contract and cause peristaltic movement in the pharynx.
Role in human disease
Uncoordinated contraction, and/or Cricopharyngeal Spasm and/or impaired relaxation of this muscle are currently considered the main factors in development of a Zenker's diverticulum. Zenker's diverticulum develops between the two bellies of the inferior constrictor (Thyropharyngeal and Cricopharyngeal) in a small gape called Killian's dehiscence. A diverticulum can form where a balloon of mucosa becomes trapped outside the pharyngeal boundaries. Food or other materials may reside here, which may lead to infection.
Motor incoordination of the cricopharyngeus can cause difficulty swallowing.
See also
- Upper esophageal sphincter
Additional images
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Muscles of the neck. Lateral view.
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Side view of the larynx, showing muscular attachments.
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Inferior pharyngeal constrictor muscle
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Deep dissection of larynx, pharynx and tongue seen from behind
References
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
- ^ Origin, insertion and nerve supply of the muscle at Loyola University Chicago Stritch School of Medicine
External links
- -375783347 at GPnotebook
- lesson8 at The Anatomy Lesson by Wesley Norman (Georgetown University) (latpharyngealitems3)
Muscles of the neck
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Cervical |
- Platysma
- Sternocleidomastoid
- Longus capitis
- Longus colli
- Scalene
- anterior
- middle
- posterior
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Suboccipital |
- Rectus capitis posterior
- Obliquus capitis
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Suprahyoid |
- Mylohyoid
- Stylohyoid
- Digastric
- Geniohyoid
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Infrahyoid |
- Thyrohyoid
- Sternohyoid
- Sternothyroid
- Omohyoid
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Pharynx |
- Pharyngeal constrictor
- Stylopharyngeus
- Salpingopharyngeus
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Larynx |
- Cricothyroid
- Cricoarytenoid
- Arytenoid
- oblique arytenoid
- transverse arytenoid
- Thyroarytenoid
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Fasciae |
- Deep cervical fascia
- Pretracheal fascia
- Prevertebral fascia
- Investing layer
- Carotid sheath
- Alar fascia
- Palatine aponeurosis
- Buccopharyngeal fascia
- Pharyngobasilar fascia
- Pharyngeal raphe
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Index of muscle
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Description |
- Anatomy
- head
- neck
- arms
- chest and back
- diaphragm
- abdomen
- genital area
- legs
- Muscle tissue
- Physiology
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Disease |
- Myopathy
- Soft tissue
- Connective tissue
- Congenital
- abdomen
- muscular dystrophy
- Neoplasms and cancer
- Injury
- Symptoms and signs
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Treatment |
- Procedures
- Drugs
- anti-inflammatory
- muscle relaxants
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UpToDate Contents
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English Journal
- The role of tensor veli platini muscle (TVP) and levetor veli platini muscle (LVP) in the opening and closing of pharyngeal orifice of Eustachian tube.
- Gyanwali B1, Li H1, Xie L1, Zhu M1, Wu Z1, He G1, Tang A1.
- Acta oto-laryngologica.Acta Otolaryngol.2016 Mar;136(3):249-55. doi: 10.3109/00016489.2015.1107192. Epub 2015 Dec 1.
- CONCLUSION: This study developed an easy way to induce otitis media in an animal model and find the relation between tensor veli platini muscle (TVP) and levetor veli platini muscle (LVP) in the opening and closing of the pharyngeal orifice of Eustachian tube. It was proved that otitis media is caus
- PMID 26624574
- Effect of body posture on involuntary swallow in healthy volunteers.
- Shiino Y1, Sakai S2, Takeishi R2, Hayashi H2, Watanabe M2, Tsujimura T2, Magara J2, Ito K3, Tsukada T4, Inoue M5.
- Physiology & behavior.Physiol Behav.2016 Mar 1;155:250-9. doi: 10.1016/j.physbeh.2015.12.024. Epub 2015 Dec 30.
- Clinically, reclining posture has been reported to reduce risk of aspiration. However, during involuntary swallow in reclining posture, changes in orofacial and pharyngeal movement before and during pharyngeal swallow should be considered. Further, the mechanisms underlying the effect of body postur
- PMID 26742532
- Transoral surgery for laryngo-pharyngeal cancer - The paradigm shift of the head and cancer treatment.
- Tateya I1, Shiotani A2, Satou Y3, Tomifuji M2, Morita S4, Muto M5, Ito J6.
- Auris, nasus, larynx.Auris Nasus Larynx.2016 Feb;43(1):21-32. doi: 10.1016/j.anl.2015.06.013. Epub 2015 Aug 19.
- Transoral surgery is a less invasive treatment that is becoming a major strategy in the treatment of laryngo-pharyngeal cancer. It is a minimally invasive approach that has no skin incision and limits the extent of tissue dissection, disruption of speech and swallowing muscles, blood loss, damage to
- PMID 26298233
Japanese Journal
- 兵頭 政光
- 日本気管食道科学会会報 65(5), 373-378, 2014
- 嚥下障害は高齢化社会の到来とともに医療的にも社会的にも大きな問題となってきた。高齢者では生理的に嚥下機能が低下する結果,誤嚥性肺炎の危険性が増大し,高齢者の生命予後を左右する。そこで,加齢による嚥下機能の変化について臨床的観点から述べた。高齢者では,嚥下関連器官の解剖学的および生理学的変化により嚥下機能が低下する。特に咽喉頭の感覚機能の低下や下咽頭収縮筋の機能的変化などによる嚥下反射の惹起遅延,食 …
- NAID 130004700383
- 内視鏡下の嚢胞内への送気で確定診断し,摘出した新生児梨状窩瘻の1例
- 飯干 泰彦,田附 裕子,関 保二 [他],鈴村 和大,藤元 治朗
- 日本小児外科学会雑誌 43(7), 948-952, 2007-12-20
- 梨状窩瘻は繰り返す頸部感染で発見されることが多い.今回,炎症を起こす前に発見され,嚢胞内含気が認められ,嚢胞に内視鏡的に送気することで位置を確認して摘出できた新生児例を報告する.症例は日齢2の女児.主訴は左頸部腫瘤.38週4日,体重2,648gで出生.左頸部に5×5cm弾性軟の腫瘤を触知した.MRI上,嚢胞と嚢胞内含気を認めた.下咽頭食道造影では嚢胞への造影剤流入を認めた.日齢19に瘻孔および嚢胞 …
- NAID 110006570181
- 再手術時に反回神経再建術を行った再発進行甲状腺癌の1例
- 川口 康夫,杉野 圭三,西原 雅浩,矢野 将嗣,新原 亮,浅原 利正
- 日本臨床外科学会雑誌 = The journal of the Japan Surgical Association 65(9), 2315-2318, 2004-09-25
- … The proximal edge of the recurrent laryngeal nerve was identified by separation of the inferior constrictor. …
- NAID 10013671395
Related Links
- inferior constrictor muscle of pharynx n. A muscle with origin in the outer surfaces of the thyroid and cricoid cartilages, with insertion to the pharyngeal raphe in the wall of the pharynx, with nerve supply from the pharyngeal plexus, and ...
- Medical Definition of INFERIOR CONSTRICTOR: a muscle of the pharynx that is the thickest of its three constrictors, arises from the surface and side of the cricoid and thyroid cartilages, inserts into the median line at the back of the ...
★リンクテーブル★
[★]
- 英
- inferior constrictor of pharynx (K), inferior constrictor (M,KL,KH)
- 関
- 咽頭筋
咽頭収縮筋
M. 581
KL. 609
- 甲状軟骨の外側面、輪状軟骨から起こる(KL.610)
- 後方に走ると共に広がって、後壁正中部で結合組織性の咽頭縫線に付着(KL.610)
[★]
- 関
- constriction、constrictive、contract、contraction、convergence、convergent、deflation、shrink、stenoses、stenosis、stenotic、stricture
[★]
- 関
- inferio、inferiorly、infra、lower、recessive、recessively、recessiveness
[★]
- 関
- inferior、inferiorly、infra、lower、sub、underneath
[★]