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 fibers curve backward to be inserted into the median raphe, being also prolonged by means of an aponeurosis to the pharyngeal spine on the basilar part of the occipital bone.
The superior fibers arch beneath the levator veli palatini muscle and the Eustachian tube.
Read more about this topic: Superior Pharyngeal Constrictor Muscle
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