The term "musculus constrictor pharyngis superior" refers to a muscle located in the throat region, specifically in the pharynx. This muscle is one of the three constrictor muscles found in the pharynx, the other two being the middle and inferior constrictor muscles.
The musculus constrictor pharyngis superior, also known as the superior pharyngeal constrictor muscle, forms a circular band around the upper part of the pharynx. It arises from the pterygoid hamulus, a hook-shaped projection of the sphenoid bone, and extends along the posterior wall of the nasopharynx.
The main function of this muscle is to aid in the swallowing process. When food or liquid is being pushed down the throat, the musculus constrictor pharyngis superior contracts, exerting pressure on the bolus and propelling it further into the lower parts of the digestive tract. Additionally, this muscle also functions in the closing of the nasopharyngeal space during swallowing, preventing food or liquid from entering the nasal cavity.
In addition to its role in swallowing, the muscle is also involved in the production of certain speech sounds. It works in coordination with other muscles of the pharynx and vocal tract to modify airflow and shape the oral cavity for speech production.
Overall, the musculus constrictor pharyngis superior plays a vital role in both the digestive and respiratory processes, contributing to the efficient transfer of food and fluids while protecting the airway.
