![]() 1 The cricopharyngeus, in turn, which lies on top (at the orifice) of the esophagus, relaxes fully for the easy passage of bolus from the pharynx to the esophagus. The thyropharyngeus propels the food through the pharynx. As the thyropharyngeus contracts the cricopharygeus relaxes, and vice versa. The pharynx extends from the cranial base to the inferior border of the cricoid cartilage anteriorly and the inferior border of the C6 vertebra posteriorly. As the name implies, the thyropharyngeus originates from the thyroid cartilage and inserts into the pharyngeal raphe. Muscle: Origin: Insertion: Innervation: Action: Superior pharyngeal constrictor: pterygo-mandibular raphe medial pterygoid plate. The paired muscles create ridges of mucous membrane in the lateral pharyngeal wall called the. It is also referred to as one of the five paired muscles of the soft palate. The palatopharyngeus muscle is a muscle of the head and neck, and one of the inner longitudinal muscles of the pharynx. Since the thyropharyngeus is attached to the cricoid and thyroid, it “provides an opportunity for laryngeal elevation.” 1īoth the thyropharyngeus and the cricopharyngeus participate in the proper swallowing of food (bolus) down to the esophagus. The inferior pharyngeal constrictor muscle is separated into two separate muscles, the thyropharyngeus and cricopharyngeus, because they have different origins, insertions, and functions. Citation, DOI, disclosures and article data. Whereas the cricopharyngeus arises from the cricoid cartilage, the thyropharyngeus starts from the thyroid cartilage (particularly from the thyroid lamina and inferior cornu) and inserts into the posterior pharyngeal raphe 1, thus, the name. The thyropharyngeus is the muscle superior to the cricopharyngeus. Lastly, some common pathological alterations will be mentioned. The inferior pharyngeal constrictor consists of two muscles: the thyropharyngeus and the cricopharyngeus. This article will highlight the anatomical structures, namely the muscles the make up the pharyngeal walls, with regards to their origins, insertions, innervation, main functions, blood supply and lymphatic drainage. ![]() At the lateral inferior margin of the origin of the muscle at this part, the. ( anatomy) The superior muscle arising from the thyroid cartilage, and, together with cricopharyngeus, constitute the inferior pharyngeal constrictor muscular properties of the inferior pharyngeal constrictor muscle adjacent to the.
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