The inferior pharyngeal constrictor muscle is one of the pharyngeal constrictor muscles.
What are the inferior constrictor muscles? Medical Definition of inferior constrictor : a muscle of the pharynx that is the thickest of its three constrictors, arises from the surface and side of the cricoid and thyroid cartilages, inserts into the median line at the back of the pharynx, and acts to constrict part of the pharynx in swallowing. Similarly to the superior and middle pharyngeal constrictor muscles, it is innervated by the vagus nerve (cranial nerve X), specifically, by branches from the pharyngeal plexus and by neuronal branches from the recurrent laryngeal nerve. Read More: How can I read and control others mind? What Innervates the inferior pharyngeal constrictor? To some extent it can be considered as an elevator of the hyoid bone, but its most important role for speech is simply as the back wall of the vocal tract. The medial pharyngeal constrictor, which originates on the greater horn of the hyoid bone, also has little function in speech. Do the middle and inferior pharyngeal constrictors play an important role in speech production? The muscle is a quadrilateral muscle, thinner and paler than the inferior pharyngeal constrictor muscle and middle pharyngeal constrictor muscle.
It is the highest located muscle of the three pharyngeal constrictors. Pharynx Anatomical terms of muscle The superior pharyngeal constrictor muscle is a muscle in the pharynx. Where is the superior pharyngeal constrictor? Do a dry swallow, squeezing all of your swallowing muscles as tightly as you can.Pretend to yawn while holding your tongue back as far as possible.Pretend to gargle while holding your tongue back as far as possible.
Inhale and hold your breath very tightly.How do I strengthen my pharyngeal muscles? What is the origin of middle pharyngeal constrictor? Middle pharyngeal constrictor muscle They are innervated by the pharyngeal branch of the Vagus nerve (CN X) with the exception of the stylopharyngeus muscle which is innervated by the glossopharyngeal nerve (CN IX). What nerve Innervates pharyngeal constrictor muscles?ĭuring swallowing, these muscles act to shorten and widen the pharynx. The Inferior pharyngeal constrictor, the thickest of the three constrictors, arises from the sides of the cricoid and thyroid cartilage. What does the inferior pharyngeal constrictor? The posterior border of this confluence is the glossopharyngeal gap, where the styloglossus and stylohyoid muscles pass between the superior and middle pharyngeal constrictor muscles, as they extend from the styloid process in the lateral pharyngeal space to the tongue and hyoid bone. What passes between the superior and middle constrictor muscles? It acts by constricting the lower portion of the pharynx. The inferior pharyngeal constrictor muscle arises from the oblique line of the thyroid cartilage of the larynx and the lateral aspect of the cricoid cartilage of the larynx. What does the pharyngeal constrictor muscle do?
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