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The pharyngeal muscles (involuntary skeletal) push food into the esophagus. There are two muscular layers of the pharynx: the outer circular layer and the inner longitudinal layer. The outer circular layer includes: Superior constrictor muscle; Middle constrictor muscle; Inferior constrictor muscle
The superior pharyngeal constrictor muscle is a quadrilateral muscle of the pharynx. It is the uppermost and thinnest of the three pharyngeal constrictors. [citation needed] The muscle is divided into four parts according to its four distincts origins: a pterygopharyngeal, buccopharyngeal, mylopharyngeal, and a glossopharyngeal part.
Its posterior border gives attachment to the superior pharyngeal constrictor muscle. [3] Its anterior border attaches to the posterior edge of the buccinator muscle. [3] The pterygomandibular raphe is the common meeting point of the superior pharyngeal constrictor muscle and the buccinator muscle. This common attachment makes the raphe a ...
pharyngeal constrictor, inferior, cricopharyngeal part head, pharynx (left/right) cricoid cartilage, thyroid cartilage: pharyngeal raphe: ascending pharyngeal artery, pharyngeal branches: vagus nerve [CNX], superior laryngeal nerve, external laryngeal branch and recurrent laryngeal nerve: swallowing: 2 2 pharyngeal constrictor, middle ...
The middle pharyngeal constrictor is a sheet-like, fan-shaped muscle. [1]The muscle's fibers diverge from their origin: the more inferior fibres descend deep to the inferior pharyngeal constrictor muscle; the middle portion of fibres pass transversely; the more superior fibers ascend and overlap the superior pharyngeal constrictor muscle.
The buccopharyngeal fascia envelops the superior pharyngeal constrictor muscles. [4] [1] It extends anteriorly from the constrictor pharyngis superior [4] over the pterygomandibular raphe to cover the buccinator muscle [1] (though another source describes it as continuous with the fascia covering the buccinator muscle). [3]
The mylohyoid muscle originates from the anterior (front) part of the mylohyoid line. [1] Rarely, the mylohyoid muscle may originate partially from other surfaces of the mandible. [ 2 ] The posterior (back) part of this line, near the alveolar margin , gives attachment to a small part of the superior pharyngeal constrictor muscle , and to the ...
The pharyngeal raphe is a raphe that serves as the posterior attachment for several of the pharyngeal constrictors (thyropharyngeal part of the inferior pharyngeal constrictor muscle, middle pharyngeal constrictor muscle, superior pharyngeal constrictor muscle). [1] [2] Two sides of the pharyngeal wall are joined posteriorly in the midline by ...