Plexus pharyngeus

Plexus pharyngeus is a network of nerves found in the pharynx. It is primarily composed of fibers from the glossopharyngeal nerve, the vagus nerve, and the sympathetic nervous system. The plexus pharyngeus plays a crucial role in the functioning of the pharynx and the surrounding structures.

Anatomy

The plexus pharyngeus is located on the outer surface of the middle constrictor muscle of the pharynx. It is formed by the pharyngeal branches of the glossopharyngeal and vagus nerves, along with fibers from the superior cervical ganglion of the sympathetic nervous system.

Function

The plexus pharyngeus provides innervation to the muscles of the pharynx, aiding in the process of swallowing. It also supplies sensory innervation to the mucous membrane of the pharynx, contributing to the gag reflex.

Clinical Significance

Damage to the plexus pharyngeus can result in difficulty swallowing, a condition known as dysphagia. It can also lead to a loss of the gag reflex. These symptoms can be indicative of a variety of medical conditions, including stroke, neurological disorders, and pharyngeal cancer.

See Also

• Pharynx
• Glossopharyngeal nerve
• Vagus nerve
• Sympathetic nervous system
• Superior cervical ganglion
• Middle constrictor muscle
• Swallowing
• Dysphagia
• Stroke
• Neurological disorders
• Pharyngeal cancer