Ukuva kunye necochlea

Umxholo

• Ushwankathelo

Ushwankathelo

Amaza esandi angena endlebeni ahamba ngophawu lwangaphandle oluvakalayo ngaphambi kokubetha indlebe kunye nokubangela ukuba angcangcazele.

I-eardrum idityaniswe ne-malleus, elinye lamathambo amancinci endlebe ephakathi. Ikwabizwa ngokuba yihammer, ihambisa ukungcangcazela kwesandi kwi-incus, eyidlulisela kwi-stapes. Iintambo zityhala zingena ziphume ngokuchasene nesakhiwo esibizwa ngokuba yi-oval window. Eli nyathelo ligqithiselwa kwi-cochlea, ulwakhiwo olugcwalise ulwelo olufana nenkumba oluqukethe ilungu leCorti, ilungu lokumanyelwa. Iqukethe iiseli ezincinci zeenwele ezihambelana necochlea. Ezi seli ziguqulela ukungcangcazela kukufaka amandla ombane aqhutyelwa kwingqondo yimithambo luvo.

Kule ndlela yokujonga, unokubona ilungu leCorti elinemigca emine yeeseli zeenwele. Kukho umqolo ongaphakathi ngasekhohlo kunye nemigca yangaphandle emithathu ngasekunene.

Masijonge le nkqubo ngokusebenza.Okokuqala, iistapes zijikijelana nefestile ye-oval. Oku kugqithisa amaza esandi kulwelo olungena cochlear, kuthumela ilungu leCorti ukuba lihambe.

Iifayibha ezikufutshane nesiphelo esingaphezulu se-cochlea ziyangxola ukuya kwisandi sokuhamba rhoqo. Abo bakufutshane nefestile embhoxo baphendula kumaza aphezulu.

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