Sinus of Morgagni (pharynx)

Sinus of Morgagni (Pharynx)

The Sinus of Morgagni is a medical term referring to a pair of small depressions located in the pharynx, specifically in the lateral wall of the nasopharynx. Named after the Italian anatomist Giovanni Battista Morgagni, these sinuses are also known as the pharyngeal bursa or bursa of the pharynx.

Anatomy

The Sinus of Morgagni is situated behind and above the tonsil, in the recess formed by the intratonsillar cleft. It is a small, pear-shaped fossa, found near the pharyngeal orifice of the Eustachian tube. The sinus is lined by a continuation of the pharyngeal mucous membrane, which is covered with ciliated columnar epithelium.

Function

The exact function of the Sinus of Morgagni is not fully understood. However, it is believed to play a role in the immune response, as it is located near the lymphatic system and is in close proximity to the tonsils, which are key components of the body's immune system.

Clinical Significance

The Sinus of Morgagni can be a site of pathology. Infections can occur, leading to sinusitis. In rare cases, cysts or tumors may develop in the sinus. These conditions can cause symptoms such as difficulty swallowing, ear pain, and a sensation of a lump in the throat.

See Also

• Pharynx
• Tonsil
• Eustachian tube
• Giovanni Battista Morgagni