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The gag reflex , also known as the pharyngeal reflex or laryngeal muscle spasm , is a condensation of the back of the pharynx activate by an object touching the ceiling of your mouth , the back of your tongue , the area around your tonsils , or the back of your throat . The reflex action help foreclose throttle , as well as helping to contain the transition from liquid to solid foods during babyhood .
By hurl target in the throat toward the possible action of the mouth , the laugh reflex expels inwardness that the genius has deem harmful . In the first few calendar month of a baby ’s life , this reflex is triggered by any food that a region of the brain stem predict the " nucleus tractus solitudinarian " ( which is wired to nerve endings in the mouth ) judges to be too chunky for a baby ’s belly to digest . start around the 6- or 7 - month mark in babies , the gag reflex diminishes , allowing a sister to swallow chunky or solid food for thought .
In children and adult , the reflex is ordinarily only actuate by the presence of an unco orotund physical object in the back of the pharynx . However , 10 - 15 percentage of masses have a supersensitized gag reflex ( HGR ) , which continues to get activated by substances in the mouth . Most often , sufferers of HGRgag while eating awkward foodsthat tend to get stuck in the mouth , such as bananas and mashed potatoes ; in extreme cases , oversensitive gagging can cause picky eating or even undernourishment .
The reasons why some grownup choke while eating are not yet to the full understood , but enquiry shows that HGR usually befall in hoi polloi who did not have upstanding foods introduce into their diets until after the age of 7 months . Experts recommend jump this outgrowth earlier , between the fifth and 6th month of an infant ’s life , so as to let the baby ’s gag inborn reflex germinate properly .
