MEDICAL PHYSIOLOGY

Detailed explanation-1: -The glossopharyngeal nerve is the ninth set of 12 cranial nerves (CN IX). It provides motor, parasympathetic and sensory information to your mouth and throat. Among its many functions, the nerve helps raise part of your throat, enabling swallowing.

Detailed explanation-2: -As stated above, the glossopharyngeal nerve provides motor innervation to the stylopharyngeus muscle, which is responsible for elevating the pharynx and larynx.

Detailed explanation-3: -Cranial nerve IX – Glossopharyngeal nerve The efferent motor fibers of cranial nerve IX supply the stylopharyngeus muscle, 1 which helps elevate the larynx and expand the pharynx during swallowing.

Detailed explanation-4: -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.