輪状咽頭筋
WordNet
- make ones way by force; "He muscled his way into the office"
- animal tissue consisting predominantly of contractile cells (同)muscular_tissue
- one of the contractile organs of the body (同)musculus
- authority or power or force (especially when used in a coercive way); "the senators used their muscle to get the party leader to resign"
PrepTutorEJDIC
- 〈U〉(動物体の組織としての)『筋肉』,筋(きん);〈C〉(体の各部を動かす)筋肉 / 〈U〉力,(特に)筋力,腕力 / 《俗に》(…に)強引に割り込む《+『in on』(『into, through』)+『名』》
- 筋肉の,筋力のある / 力ずくの
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2012/09/16 00:36:28」(JST)
[Wiki en表示]
| Inferior pharyngeal constrictor muscle |
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| 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.) |
| Latin |
musculus constrictor pharyngis inferior |
| Gray's |
subject #244 1142 |
| Origin |
cricoid and thyroid cartilage |
| Insertion |
pharyngeal raphe |
| Artery |
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| Nerve |
Pharyngeal plexus of vagus nerve |
| Actions |
Swallowing |
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.
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Contents
- 1 Origin and insertion
- 2 Action
- 3 Role in human disease
- 4 See also
- 5 Additional images
- 6 References
- 7 External links
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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.
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.
Motor incoordination of the cricopharyngeus can cause difficulty swallowing.
Between the two bellies of the inferior constrictor (Thyropharyngeal and Cricopharyngeal) is a small gape called 'Killian's dehiscence'. It is clinically important as 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.
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
References
- ^ LUC icon
External links
- -375783347 at GPnotebook
- lesson8 at The Anatomy Lesson by Wesley Norman (Georgetown University) (latpharyngealitems3)
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.
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List of muscles of head and neck: the neck (TA A04.2, GA 4.387)
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| Cervical |
CN VII (superficial, PC): platysma
CN XI (deep): sternocleidomastoid
C1–C6 (anterior): Prevertebral muscles: longus (capitis, colli)
C3–C8 (lateral): scalene (anterior, medius, posterior)
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| Suboccipital |
C1: rectus capitis posterior (major, minor) · obliquus capitis (inferior, superior)
C1–C6 (anterior): Prevertebral muscles: rectus capitis (anterior, lateralis)
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| Suprahyoid |
CN V3 (medial): mylohyoid · anterior belly of digastric
CN VII (lateral): stylohyoid · posterior belly of digastric
C1 (deep): geniohyoid
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| Infrahyoid/strap |
C1: thyrohyoid
C1–C3: sternohyoid · sternothyroid · omohyoid
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| Fasciae |
Deep cervical fascia (Pretracheal fascia, Prevertebral fascia, Investing layer) · Carotid sheath · Alar fascia
pharynx: Buccopharyngeal fascia · Pharyngobasilar fascia
Palatine aponeurosis
Pharyngeal raphe
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| Pharynx |
pharyngeal constrictor (superior, middle, inferior) · longitudinal (stylopharyngeus, salpingopharyngeus)
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| Larynx |
cricothyroid · cricoarytenoid (posterior, lateral) · arytenoid (oblique arytenoid/aryepiglottic, transverse arytenoid) · thyroarytenoid (vocal, thyroepiglottic)
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anat (h/n, u, t/d, a/p, l)/phys/devp/hist
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noco(m, s, c)/cong(d)/tumr, sysi/epon, injr
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UpToDate Contents
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English Journal
- Botulinum toxin treatment for oropharyngeal dysphagia in patients with stroke.
- Terré R, Panadés A, Mearin F.SourceUnit of Functional Digestive Rehabilitation, Institut Guttmann, Neurorehabilitation Hospital, University Institute affiliated with the Autonomous University of Barcelona, Badalona, Spain.
- Neurogastroenterology and motility : the official journal of the European Gastrointestinal Motility Society.Neurogastroenterol Motil.2013 Nov;25(11):896-e702. doi: 10.1111/nmo.12213. Epub 2013 Aug 29.
- BACKGROUND: In a previous pilot study, we demonstrated that a single injection of botulinum toxin A (BTX-A) in the cricopharyngeus muscle is effective in patients with neurologic dysphagia with upper esophageal sphincter (UES) opening dysfunction and presence of some pharyngeal contraction (>25
- PMID 23991889
- The Sensory Innervation of the Human Pharynx: Searching for Mechanoreceptors.
- de Carlos F, Cobo J, Macías E, Feito J, Cobo T, Calavia MG, García-Suárez O, Vega JA.SourceDepartamento de Cirugía y Especialidades Médicos-Quirúrgicas, Universidad de Oviedo, Oviedo, Spain; Instituto Asturiano de Odontología, Oviedo, Spain.
- Anatomical record (Hoboken, N.J. : 2007).Anat Rec (Hoboken).2013 Oct 4. doi: 10.1002/ar.22792. [Epub ahead of print]
- The coordinate neural regulation of the upper airways muscles is basic to control airway size and resistance. The superior constrictor pharyngeal muscle (SCPM) forms the main part of the lateral and posterior walls of the pharynx and typically is devoid of muscle spindles, the main type of proprioce
- PMID 24123994
- Upper esophageal sphincter dysfunction: diverticula-globus pharyngeus.
- Schindler A, Mozzanica F, Alfonsi E, Ginocchio D, Rieder E, Lenglinger J, Schoppmann SF, Scharitzer M, Pokieser P, Kuribayashi S, Kawamura O, Kusano M, Zelenik K.SourceDepartment of Biomedical and Clinical Sciences "L. Sacco,", University of Milan, Milan, Italy.
- Annals of the New York Academy of Sciences.Ann N Y Acad Sci.2013 Oct;1300(1):250-60. doi: 10.1111/nyas.12251.
- The following discussion of upper esophageal sphincter dysfunction includes commentaries on the role of the cricopharyngeus muscle in reflux disease; the etiology and treatment of Zenker diverticulum; the use of videofluoroscopy in patients with dysphagia, suspicion of aspiration, or globus; the rol
- PMID 24117647
Japanese Journal
- Cricopharyngeal Myotomy for Primary Cricopharyngeal Dysfunction Caused by a Structural Abnormality Localized in the Cricopharyngeus Muscle : Report of a Case
- SUDA KOICHI,TAKEUCHI HIROYA,SEKI HIROAKI,YOSHIZU AKIRA,YASUI NOBUTAKA,MATSUMOTO HIDETOSHI,SHIMADA AKIHIKO,ISHIKAWA HIROKI,KITAGAWA YUKO
- Surgery today : the Japanese journal of surgery 41(9), 1238-1242, 2011-09-01
- NAID 10029525036
- 食道入口部開大不全に対して手術とリハビリテーションを行い経口摂取に至った一例
- 安達 大雅,大瀧 祥子,井上 誠,山田 好秋,Adachi Taiga,Ootaki Sachiko,Inoue Makoto,Yamada Yoshiaki
- 新潟歯学会雑誌 37(2), 201-204, 2007-12
- … 食事ができるまでに至った意義は非常に大きいと考える｡本症例は耳鼻科による外科手術とその後の当科におけるリハビリテーションによる新たな摂食方法の獲得のどちらが欠けてもこのような改善が期待できなかったケースとして, 多職種連携の重要性を実証したものといえる｡We report a patient who has suffered from severe dysphagia with cricopharyngeal dysfunction, a hypertonic cricopharyngeus muscle, after brain stem …
- NAID 120005302064
- Mandibular movement and EMG activity during ingestion and swallowing
- Naiki Hirotaka,Ono Yoshiaki,Tanaka Eiji,Iwayama Kazufumi,Uesugi Naoto,Komasa Yutaka
- Journal of Osaka Dental University 40(1), 1-5, 2006-04
- … We measured EMG activity in the cricopharyngeus during swallowing in normal subjects using a newly-designed electrode. … We were able to define the onset of EMG activity, though it was difficult to specify the end point because of low-frequency noise at the time of muscle relaxation. … We concluded that because EMG activity in the cricopharyngeus is extremely difficult to determine, it is better to evaluate it together with other parameters when evaluating swallowing activities. …
- NAID 110004689288
Related Links
- 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). On the thyroid cartilage it arises from the ...
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- cricopharyngeus muscle
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- upper esophageal sphincter
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