Abstract

The initial part of the digestive tract between the oral cavity and the esophagus is represented by the pharynx, which at the same time is a fragment of the respiratory tract, connecting the nasal cavity with the larynx. The pharynx ensures the passage of food and conduction of air into the lower important parts of the body, participates in voice formation and the formation of articulate speech, and performs a protective function. The important role of the pharynx in protective mechanisms is largely due to the work of the pharyngeal lymphoepithelial structures, which form the so-called eous Waldeyer –Pirogov ring. As part of the latter, paired palatine and tubal tonsils, unpaired pharyngeal tonsils (PG) and lingual tonsils are differentiated line and granules of lymphoid tissue of the posterior pharyngeal wall.

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