Iyo umuntu amaze igihe gito mu mazi, uruhu rw’intoki n’ibirenge ruratangira kwikwedura, rukamera nk’urwo prune. Si amazi yonyine abitera, ahubwo ni igikorwa gikorwa n’imyakura y’umubiri.
Iyo intoki zishyizwe mu mazi, imyakura igenzura imitsi y’amaraso ituma iyo mitsi ifunga, bigatuma uruhu rwo hejuru rwikwedura. Ibi bikorwa kugira ngo byorohere umuntu gufata ibintu bitose neza, nk’uko amapine y’imodoka afasha kugenda ku butaka bworoshye.
Kudakweduka bishobora no kuba ikimenyetso cy’indwara nka diabete, cystic fibrosis, cyangwa ibibazo by’imyakura. Ni yo mpamvu abaganga bashobora kugenzura uko intoki zikweduka nk’ikizamini cy’ubuzima bw’imyakura.
Abahanga bavuga ko bikorerwa n’imyakura yitwa “autonome”, igenzura imikorere y’umubiri utabitekerejeho. Kwikweduka ntibibaho ku bice byose by’umubiri, ahubwo bigaragara cyane ku ntoki n’ibirenge. Ibi bice bifite uruhare runini mu gufata ibintu no kugenda ahantu haterera cyangwa hateragurika. Uko intoki zawe zikweduka bishobora no kugufasha kumenya uko imikaya n’imyakura yawe ikora.
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