Pharyngeal constrictor
Encyclopedia
Pharyngeal constrictor refers to one of the muscles that serves to constrict the pharynx
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They include:
Pharynx
The human pharynx is the part of the throat situated immediately posterior to the mouth and nasal cavity, and anterior to the esophagus and larynx. The human pharynx is conventionally divided into three sections: the nasopharynx , the oropharynx , and the laryngopharynx...
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They include:
- Superior pharyngeal constrictor muscleSuperior pharyngeal constrictor muscleThe superior pharyngeal constrictor muscle is a quadrilateral muscle, thinner and paler than the inferior pharyngeal constrictor muscle and middle pharyngeal constrictor muscle.-Origin and insertion:The four parts of this muscle arise from:...
- Middle pharyngeal constrictor muscleMiddle pharyngeal constrictor muscleThe middle pharyngeal constrictor is a fanshaped muscle, smaller than the Inferior pharyngeal constrictor muscle.-Origin and insertion:It arises from the whole length of the upper border of the greater cornu of the hyoid bone, from the lesser cornu, and from the stylohyoid ligament.The fibers...
- Inferior pharyngeal constrictor muscleInferior pharyngeal constrictor muscleThe Inferior pharyngeal constrictor, the thickest of the three constrictors, arises from the sides of the cricoid and thyroid cartilage. Similarly to the superior and middle pharyngeal constrictor muscles, it is innervated by the vagus nerve , specifically, by branches from the pharyngeal plexus...