Origin: Palatine aponeurosis and hard palate
Insertion: Upper border of thyroid cartilage (blends with constrictor fibers)
Artery: Facial artery
Nerve: Vagus nerve and cranial accessory nerve
Action: Pulls pharynx and larynx
The Palatopharyngeus muscle (Pharyngopalatinus) is a long, fleshy fasciculus narrower in the middle than at either end, forming, with the mucous membrane covering its surface, the pharyngopalatine arch. It is separated from the Glossopalatinus by an angular interval, in which the palatine tonsil is lodged.
It arises from the soft palate, where it is divided into two fasciculi by the Levator veli palatini and Musculus uvulae:
Passing lateralward and downward behind the palatine tonsil, the Pharyngopalatinus joins the Stylopharyngeus, and is inserted with that muscle into the posterior border of the thyroid cartilage, some of its fibers being lost on the side of the pharynx and others passing across the middle line posteriorly, to decussate with the muscle of the opposite side.