Superior pharyngeal constrictor muscle
Superior pharyngeal constrictor muscle Muscles of the pharynx and cheek. Muscles of the pharynx, viewed from behind, together with the associated vessels and nerves. Latin musculus constrictor pharyngis superior Gray's subject #244 1143 Origin medial pterygoid plate, pterygomandibular raphé, alveolar process Insertion pharyngeal raphe, pharyngeal tubercle Artery Ascending pharyngeal artery and tonsillar branch of facial artery Nerve Pharyngeal plexus of vagus nerve Actions Swallowing
Origin and insertion
The four parts of this muscle arise from:
- the lower third of the posterior margin of the medial pterygoid plate and its hamulus (Pterygopharyngeal part)
- from the pterygomandibular raphe (Buccopharyngeal part)
- from the alveolar process of the mandible above the posterior end of the mylohyoid line (Myolopharyngeal part)
- and by a few fibers from the side of the tongue (Glossopharyngeal part)
The interval between the upper border of the muscle and the base of the skull is closed by the pharyngeal aponeurosis, and is known as the sinus of Morgagni.
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.
The superior pharyngeal constrictor muscle is innervated by the pharyngeal branch of the vagus nerve via the pharyngeal plexus.
- 26869838 at GPnotebook
- LUC scon
- lesson8 at The Anatomy Lesson by Wesley Norman (Georgetown University) (latpharyngealitems3)
- Roche Lexicon - illustrated navigator, at Elsevier 05287.011-1
List of muscles of head and neck: the neck (TA A04.2, GA 4.387) Cervical Suboccipital Suprahyoid Infrahyoid/strap Fasciae Pharynx Larynx
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Look at other dictionaries:
superior pharyngeal constrictor muscle — n SUPERIOR CONSTRICTOR … Medical dictionary
Inferior pharyngeal constrictor muscle — Muscles of the pharynx and cheek. (Constrictor pharyngis inferior visible at bottom left.) … Wikipedia
Middle pharyngeal constrictor muscle — Muscles of the pharynx and cheek. (Constrictor pharyngis medius labeled at center left.) … Wikipedia
Pharyngeal constrictor — Muscles of the pharynx and cheek … Wikipedia
superior constrictor — n a 4 sided muscle of the pharynx that arises from the posterior and medial parts of the pterygoid plate, from the pterygomandibular raphe, from the alveolar process above the end of the mylohyoid line, and from the side of the tongue, that… … Medical dictionary
Pharyngeal — The word pharyngeal, meaning to do with the pharynx or throat, may refer to: * Pharynx, for pharyngeal anatomy * Pharyngeal muscles **Superior pharyngeal constrictor muscle ** Middle pharyngeal constrictor muscle ** Inferior pharyngeal… … Wikipedia
Pharyngeal raphe — Infobox Anatomy Name = PAGENAME Latin = raphe pharyngis GraySubject = GrayPage = Caption = Muscles of the pharynx, viewed from behind, together with the associated vessels and nerves. (Pharyngeal raphe not labeled, but region is visible.)… … Wikipedia
Pharyngeal tubercle — Infobox Bone Name = Pharyngeal tubercle Latin = tuberculum pharyngeum GraySubject = 31 GrayPage = 132 Caption = Occipital bone. Outer surface. (Pharyngeal tubercle not labeled but visible at bottom, at center of box, labeled as attachment point… … Wikipedia
Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… … Medical dictionary
constrictor — 1. Anything that binds or squeezes a part. SEE ALSO: inferior c. (muscle) of pharynx, middle c. (muscle) of pharynx, superior pharyngeal c. (muscle). 2. A muscle, the action of which is to narrow a … Medical dictionary