What are the pharyngeal constrictor muscles?

The superior pharyngeal constrictor muscle is one of the pharyngeal constrictor muscles. Its primary action is constriction of the pharynx (in coordination with the middle pharyngeal constrictor and the inferior pharyngeal constrictor muscles) to deliver a bolus of food into the esophagus.

What does inferior constrictor muscle do?

The function of this muscle is to facilitate food propagation towards the esophagus by constricting the wall of pharynx during deglutition. In addition, the inferior part of this muscle forms the upper esophageal sphincter.

What is superior constrictor muscle?

Anatomical terms of muscle The superior pharyngeal constrictor muscle is a muscle in the pharynx. It is the highest located muscle of the three pharyngeal constrictors. The muscle is a quadrilateral muscle, thinner and paler than the inferior pharyngeal constrictor muscle and middle pharyngeal constrictor muscle.

What is thyropharyngeus muscle?

The thyropharyngeus muscle originates from the thyroid cartilage and inserts into the median pharyngeal raphe. The cricopharyngeus muscle originates from the cricoid cartilage and blends into the esophageal muscle. When the inferior constrictors contract, they constrict the lower portion of the pharynx.

What are the three parts of pharynx?

The throat (pharynx) is a muscular tube that runs from the back of your nose down into your neck. It contains three sections: the nasopharynx, oropharynx and laryngopharynx, which is also called the hypopharynx.

What is the act of swallowing called?

The process of swallowing, also known as deglutition, involves the movement of substances from the mouth (oral cavity) to the stomach via the pharynx and esophagus.

What is Buccopharyngeal fascia?

The buccopharyngeal fascia is the component of the middle layer of the deep cervical fascia that invests the outside of the pharyngeal constrictors and buccinator muscles.

What is buccopharyngeal fascia?

Which structure closes off the nasopharynx during swallowing?

The structure that seals off the nasopharynx during swallowing is the uvula.

Is the larynx a muscle?

The muscles of the larynx can be divided into two groups; the external muscles and the internal muscles. The external muscles act to elevate or depress the larynx during swallowing. In contrast, the internal muscles act to move the individual components of the larynx – playing a vital role in breathing and phonation.

What are the pharyngeal constrictor muscles? The superior pharyngeal constrictor muscle is one of the pharyngeal constrictor muscles. Its primary action is constriction of the pharynx (in coordination with the middle pharyngeal constrictor and the inferior pharyngeal constrictor muscles) to deliver a bolus of food into the esophagus. What does inferior constrictor muscle do? The…