Uhlaka ukuzwa: nokwakheka umsebenzi weminyango ezinkulu

Izitho ezwé ivumela ukuqonda imisindo ehlukahlukene yomhlaba zangaphandle, ukuqaphela isimo sawo futhi indawo. Nge ezwayo umuntu uzuza ikhono lokukhuluma. uhlaka ukuzwa - eyinkimbinkimbi uhlelo esivunyelaniswe series axhunywe nomunye neminyango emithathu.

indlebe yangaphandle

ingxenye Okokuqala limelela auricle - ukuma eziyinkimbinkimbi ipuleti cartilaginous kusuka zombili embozwe isikhumba kanye yangaphandle sokuzwa meatus.

Umsebenzi oyinhloko we-pinna - kwemukelwa kunyakaza acoustic air. Kusukela emigodini auricle iqala yangaphandle canal sokuzwa - ubude tube ka 27 - 35 mm, ukulungiselelwa ezijulile ithambo yesikhashana Yekhanda. Esikhathini isikhumba abami komsele indlebe, kukhona sulphur indlala uketshezi okuyinto evimbela Ukungena ukuthelelana isitho ekuzweni. Kontwentwesi - ulwelwesi umncane kodwa eqinile - ehlukanisa indlebe yangaphandle emnyangweni isitho ukuzwa, maphakathi nendlebe yesibili.

maphakathi nendlebe

Ngo ekhosombeni wethambo yesikhashana iyona ingaphakathi tympanic, okuyinto akha ingxenye eyinhloko maphakathi nendlebe. Tintfo (Eustachian) tube - isixhumanisi phakathi maphakathi nendlebe kanye nasopharynx. Lapho singagwinyi ukunyakaza tube Eustachian kuvula futhi ivumela emoyeni ukuze ukungena maphakathi nendlebe, ukuthi kubhalansisa ingcindezi kule ingaphakathi tympanic kanye yangaphandle canal sokuzwa.

Maphakathi nendlebe kuthiwa movably oxhumene by miniature ukuzwa ithambo - indlela eyinkimbinkimbi izinto ukudluliswa amagagasi acoustic ivela yangaphandle canal sokuzwa ekulalelweni amaseli zengaphakathi lendlebe. Itshe lokuqala - isando, ekupheleni eside exhunywe eardrum. Esesibili - nesikhandelo, ehlangene lwesithathu ithambo amancane, isitibili. Stapes kuya okusaqanda iwindi amabhere, okuyindawo zengaphakathi lendlebe iqala. Amathambo, okubandakanya uhlaka ukuzwa, mancane kakhulu. Ngokwesibonelo, isisindo stapes kuyinto mg 2.5 kuphela.

Zengaphakathi lendlebe

Esesithathu umnyango ukuzwa isitho emelelwa Umpheme (bone miniature ikhamera), imiselekazi ongaphambili omise imfundo ekhethekile - amathambo tube ngodonga endaweni ezingqubuzanayo ezaziyaluzisa Kuvunguza.

Le ngxenye analyzer acoustic, kepha efaniswe umnenke, futhi ubizwa ngokuthi - the cochlea sokuzwa.

uhlaka yokuzwa izakhiwo yokwakheka ezibalulekile, okuvumela ukuba alondoloze umbono olinganiselayo futhi ukuhlola isikhundla umzimba emkhathini. Lokhu bangaphambi nemisele ongaphambili omise egcwele uketshezi, futhi ngaphakathi ngaphakathi amaseli ebucayi kakhulu. Lapho umuntu eshintsha isikhundla komzimba, kukhona shift okusamanzi eziteshini. Receptor fixed ukufuduka uketshezi zithumela umlayezo mayelana nomcimbi ebuchosheni. Ngakho ezwa futhi ibhalansi umzimba ivumela ingqondo ukuze ufunde mayelana umzimba wethu ukunyakaza.

Ulwelwesi, etholakala ngaphakathi cochlea, siqukethe cishe 25 tysyach Imicu yotshani ayetholakala anobude obungalingani, ngamunye ezisabela imvamisa imisindo ethize futhi kuvuliwe kuvalwe emsipheni sokuzwa. Jitters ekuqaleni adlulisiwe le oblongata medulla, bese ifinyelela cortex cerebral. Esikhathini izikhungo sokuzwa we ezishukumisa nobuchopho sikuhlaziye systematized, futhi umphumela waba ukuthi sizwa umsindo igcwalisa emhlabeni.