Superior pharyngeal constrictor muscle
The superior pharyngeal constrictor muscle is a muscle in the pharynx. It is the highest located muscle of the three pharyngeal constrictors. The muscle is a quadrilateral muscle, thinner and paler than the inferior pharyngeal constrictor muscle and middle pharyngeal constrictor muscle.
|Superior pharyngeal constrictor muscle|
Muscles of the pharynx, viewed from behind, together with the associated vessels and nerves.
|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|
|Latin||Musculus constrictor pharyngis superior|
|Anatomical terms of muscle|
The muscle is divided into four parts: A pterygopharyngeal, buccopharyngeal, mylopharyngeal and a glossopharyngeal part.
Origin and insertionEdit
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 (Mylopharyngeal 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 (pharynx)|sinus of Morgagni]. There is an interval between superior pharyngeal constrictor and middle pharyngeal constrictor, this space contains glossopharyngeal nerve and styloglosseus muscle.