what is adenoid
Adenoids are the mass of pair soft tissues present in the back of nasal cavity which can also be known as pharyngeal tonsils. Adenoids are part of lymphoid system and made of same types of lymphoid tissues. Everybody has adenoids at birth and in childhood, but gradually it shrinks with aging and by adulthood maximum people’s adenoids have disappeared.
structure and function of adenoids
Adenoids glands are the pair of patch tissues present behind the uvula on upper part of naso-pharynx. The upper surface of adenoids has a thin layer of ciliated epithelial cells covered by a thin film of mucus. The cilia are the microscopic hair like projection from epithelial cells those moves constantly in wave like manner to propel the mucus secreted from the mucus layer downward to pharynx. The adenoids have the protective action against the infection. When you breathe you take lots of bacteria virus, various dusts and foreign bodies with the air. Those are trapped in the epithelial mucus membrane of adenoids and the cilia present in the epithelial tissues throw out them towards the pharynx to swallow
Clinical significance of adenoid
In child hood every one’s immune e system is week in comparison to a adult person. So there are maximum chances of getting sick. As the age increases the immune system get more Adenoids have protective role for the body. Those two masses present at back of the nasal cavity. They consist of lymphoid tissues like all lymph nodes. Those two adenoids help to clean the bacteria and other foreign substances that do enter inside our body by the air we breathe in. So it protects our body from the outside enemies. By repeated exposure to the foreign substances they gradually get enlarged.