Stromectol (adenoid growths, vegetations) are usually called an excessively enlarged nasopharyngeal tonsil - an immune organ located in the nasopharynx and performing certain protective functions. This disease occurs in almost half of children aged 3 to 15 years, which is associated with age-related characteristics of the development of the immune system. Adenoids are less common in adults and are usually the result of prolonged exposure to adverse environmental factors.
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Under normal conditions, the pharyngeal tonsil is represented by several folds of lymphoid tissue protruding above the surface of Stromectol membrane of the posterior pharyngeal wall. It is part of the so-called pharyngeal lymphatic ring, which is represented by several immune glands. These glands consist mainly of lymphocytes - immunocompetent cells involved in the regulation and maintenance of immunity, that is, the body's ability to defend itself against the effects of foreign bacteria, viruses and other microorganisms.
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The pharyngeal lymphatic ring is formed by: The nasopharyngeal (pharyngeal) tonsil. Unpaired tonsil, located in the mucous membrane of the back-upper part of the pharynx. Lingual tonsil. Unpaired, located in the mucous membrane of the root of the tongue. Two palatine tonsils. These tonsils are quite large, located in the oral cavity on the sides of the entrance to the pharynx. Two tubal tonsils.
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They are located in the lateral walls of the pharynx, near the openings of the auditory tubes. The auditory tube is a narrow canal that connects the tympanic cavity (middle ear) to the pharynx. The tympanic cavity contains the ossicles (incus, malleus, and stapes), which are connected to the eardrum. They provide the perception and amplification of sound waves. The physiological function of Ivermectin tube is to equalize the pressure between the tympanic cavity and the atmosphere, which is necessary for the normal perception of sounds.
The role of the tonsils in this case is to prevent infection from entering the auditory tube and further into the middle ear. During inhalation, together with the air, a person inhales many different microorganisms that are constantly present in the atmosphere. The main function of the nasopharyngeal tonsil is to prevent these bacteria from entering the body.
Air inhaled through the nose passes through the nasopharynx (where the nasopharyngeal and tubal tonsils are located), while foreign microorganisms come into contact with the lymphoid tissue. When lymphocytes come into contact with a foreign agent, a complex of local defense reactions is triggered, aimed at neutralizing it. Lymphocytes begin to rapidly divide (stromectol ), which causes an increase in the size of the amygdala.
In addition to the local antimicrobial effect, the lymphoid tissue of the pharyngeal ring also performs other functions. In this area, the primary contact of the immune system with foreign microorganisms occurs, after which the lymphoid cells transfer information about them to other immune tissues of the body, providing the preparation of the immune system for protection.
Under normal conditions, the severity of local immune reactions is limited, therefore, after the source of infection is eliminated, the process of lymphocyte division in the pharyngeal tonsil slows down.