![]() ![]() ![]() It receives oxygen-rich blood from a secondary branch of the superior thyroid artery, which arises from the common carotid.īelow, drawing of deep muscle of neck, exhibiting the inferior pharyngeal constrictor. This pharyngeal muscle is innervated by the branches from the paryngeal plexus. The large structures on the lateral aspect of the pharynx are. The inferior pharyngeal constrictor narrows the lower part of pharynx during deglutition (swallowing). At the superior aspect of the pharynx (bottom of the screen) is the inferior aspect of the soft palate with the dangling uvula. Its superior ascending portion overlaps the middle constrictor muscle. The three major muscles which constrict the pharynx are the superior pharyngeal constrictor (SC), the middle pharyngeal constrictor (MC), and the inferior. It is located in the posterior wall of the laryngopharynx, slightly above the origin of the esophagus 1. It is inserted into the pharyngeal raphé in the posterior median line of pharynx.Īlso called inferior constrictor muscle, it is covered by the buccopharyngeal fascia, which is a thin membrane that envelops the pharynx. Then it extends backwards and upwards, in an oblique fashion, as it becomes wider. The cricopharyngeal muscle has been considered to be either the transverse part of the inferior pharyngeal constrictor, or a sepa. It originates from the lateral surface of cricoid cartilage, the side of the wing of thyroid cartilage, and the inferior cornu. The pharyngeal constrictor muscles that form the posterior wall of the pharynx consist of three muscles, namely, superior, middle, and inferior pharyngeal constrictor muscles 18. Being broad, it lies across the lateral aspect of larynx and proximal portion of esophagus and trachea. It is well known that the pharyngeal constrictor muscles are related to swallowing. and inferior pharyngeal constrictor muscles, guarding against injury to the in-. The inferior pharyngeal constrictor also performs this function, but plays a more important role constricting the pharynx in the formation of pharyngeal. The inferior pharyngeal constrictor is one of the three constrictor muscles of the human pharynx. The laryngeal cartilages constituting the ground plan of the larynx are. of which are directly controlled by the pharyngeal motoneu-rons (PMs) in the nucleus ambiguus via the pharyngeal branch of the vagus nerve (Ph-X). ![]()
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