Superior pharyngeal constrictor muscle
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The Constrictor pharyngis superior (Superior constrictor) is a quadrilateral muscle, thinner and paler than the Inferior pharyngeal constrictor muscle and Middle pharyngeal constrictor muscle.
It arises from the lower third of the posterior margin of the medial pterygoid plate and its hamulus, from the pterygomandibular raphé, from the alveolar process of the mandible above the posterior end of the mylohyoid line, and by a few fibers from the side of the tongue.
The fibers curve backward to be inserted into the median raphé, 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 and the auditory tube. 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.
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