UMary Allen
Izinja zinokuzwa okuhle kakhulu. Okungenani yilokho abakushoyo. Kodwa inja izwa kangcono kangakanani uma iqhathaniswa nabantu?
Lo mbuzo akulula ukuwuphendula. Yebo, singaqhathanisa ukufundwa nokuzwela namaza. Sizophinde sibhekane nesakhiwo sokuzwa kwenja.
Nokho, ukuzwa kwenja kunezici ezimbili ezihlukene. Ngakho-ke ukuqhathanisa nokuzwa komuntu akulula.
Kungcono kangakanani ukuzwa izinja?
Kungenzeka ukuthi ubonile ukuthi umngane wakho onemilenze emine usevele akaphumuli noma uyabika ngaphambi kokuthi uzwe lutho.
Izinja zinemizwa ehlukene yokuthola indlela yazo empilweni. Nokho, izinzwa zinesisindo esihlukile kunabantu.
Nakuba umuzwa wokubona ubaluleke kakhulu kithina bantu, wona ukubaluleka okwesibili ezinjeni. Kuye, ikhala lakhe futhi ukuzwa kubaluleke kakhulu ekuphileni kwansuku zonke.
Okokuqala, ake siqale ngezisekelo zokuzwa kwezinja.
Izindlebe zezinja zakhiwe njengezindlebe zomuntu
Ekuboneni kokuqala, izindlebe zezinja zihluke kakhulu. Ngakho kunezindlebe ezilengayo noma ezimile, izindlebe ezinkulu noma ezincane. Uhlobo ngalunye lunendlebe yalo ethile.
Ngokwe-anatomically, zonke izindlebe zezinja ziyafana. Indlebe yenja inezingxenye ezintathu, njengendlebe yomuntu:
- Indlebe engaphandle
I-pinna ne-ear canal kuyingxenye yendlebe yangaphandle. - Indlebe ephakathi
Indlebe emaphakathi iqukethe amathambo amancane amaningana kanye ne-eardrum. - Indlebe yangaphakathi
Indlebe yangaphakathi iqukethe i-cochlea kanye nesistimu ye-vestibular.
Kusebenza kanjani ukuzwa kwenja?
Imisindo ihamba ngomsele wokuzwa iye e-eardrum, ulwelwesi. Ithatha amaza omsindo iwadlulisele endlebeni ephakathi.
Yilapho okutholakala khona isando, i-anvil, ne-stirrup, amathambo amancane akhulisa imisindo futhi awadlulisele endlebeni engaphakathi.
I-cochlea ne-balance organ igcwele uketshezi. Badlulisela ukundindizela abakuthola manje ebuchosheni ngenzwa yokuzwa.
Uhla lokuzwa kwezinja
Lokhu kwenza kucace ukuthi inja izwa ngendlela efana neyomuntu. Ukuzwa nokucubungula umsindo kusebenza ngendlela efanayo kuzo zombili izidalwa eziphilayo.
Noma kunjalo, kunomehluko omkhulu. Izinja zizwa amaza esingakwazi nhlobo ukuwabona.
Cabanga nje ngekhwelo lenja. Akwaziwa kithi. Nokho, izinja ziyasabela kulokhu ngoba ziyakwazi ukuzwa imisindo ephezulu kakhulu.
Izinja zizwa imvamisa ukusuka ku-15 kuye ku-50,000 hertz (50 kilohertz). Nakuba abantu bezwa kuphela amaza aphakathi kuka-20 no-20,000 Hertz.
Iyunithi ye-Hertz ikhombisa inani lama-oscillation ngomzuzwana. Ibanga lefrikhwensi elizwakalayo liyehla ngokuya ngeminyaka.
Inkulumo yomuntu isukela ku-150 kuya ku-5,000 hertz. Izikhwelo zezinja zikhiqiza amathoni ebangeni lokuvama elingu-16 kuya ku-22 kilohertz.
Ukulalela okukhethekile
Omunye umehluko omkhulu yikhono lenja lokuzwa ngokukhetha.
Lokhu kusho ukuthi izinja zingakwazi ukuhlunga imisindo ebalulekile enanini elikhulu lemisindo. Vele ufihle okunye...
Kungakhathaliseki ukuthi kunomsindo ongakanani endaweni ezungeze izinja, zihlala zizwa ukuklabalasa kwezitsha zokudla.
Kungani inja iphendulela izindlebe?
Kodwa kunomunye umehluko obalulekile phakathi kwenja nezindlebe zomuntu.
Ukuze ukwazi ukuthola imisindo engcono esikhaleni, izinja zinganyakaza izindlebe zombili ngaphandle komunye nomunye.
Lokhu ungakubona kahle ezilwaneni ezinezindlebe eziqondile.
Kodwa isebenza kahle nasezindlebeni ze-floppy. Imisipha ehlukene engu-17 inesibopho salokhu kunyakaza. Leli khono elikhethekile libalulekile lapho uzingela.
Ibalulekile kithina bantu ngoba ivumela inja ukuthi izwe futhi isithole, ngisho noma ingasiboni nhlobo.
Uma uthi nhlá, ungase ucabange ukuthi izinja zizwa kangcono kunabantu. Nokho, abakwenzi lokho. Bamane bezwa okuhlukile kunathi.
Kufanele sicabange ngalokhu ekuphileni kwansuku zonke nabangane bethu abanemilenze emine.
Izinja zizwa umsindo ongakanani kunabantu?
Ngenxa yekhono lazo lokuzwa imisindo engaphandle kwebanga lethu lokuvama, izinja maningi amathuba okuthi zithuke noma ziphazamiseke.
Izinja ziyawuzwa umsindo kodwa futhi ziyawuzwa umsindo. Imisindo emikhulu ithathwa njengengemnandi ngaphambili kakhulu. Lokhu kubangela ukucindezeleka enja.
Kufanele ukunake lokhu lapho usebenza nenja yakho futhi ugweme umsindo ngazo zonke izindleko.
I-Ultrasound yezinja
Imishini ye-Ultrasound esetshenziswa ngokumelene nezinja zisebenzisa lolu xhumano. Imishini enjalo ithengiswa njengezixoshi noma izibazi zezinja.
Umuntu angaphikisana ngokuba wusizo. Lawa madivaysi akhiqiza umsindo omkhulu, ongaphezu komkhawulo wezindlebe zomuntu ongu-20 kHz.
Umsindo awuzwakali kubantu. Izinja ziyawuzwa umsindo ngaphandle kwezinkinga. Futhi izinga lomsindo eliphezulu alikhululeki kakhulu kubo. Ungacabanga ngakho njengokuma eduze kwendiza isuka.
Shintsha ukuphakama kwezwi lakho
Inja iyakwazi ukubona ngephimbo lethu ukuthi siqhuba kanjani. Lesi futhi isizathu esenza ukuthi baphendule imizwa yethu. Inja nayo ibona kahle kakhulu lapho sijabule, kodwa-ke futhi lapho simthukuthelele.
Uma inja ingalaleli ngokushesha kumyalo, ukuyithethisa akuyona indlela yokuzikhethela. Bese uvele uzame ngezwi elihlukile.
Mane ubize isilwane sakho sibe nobungane kancane ukuze sithande ukuza kuwe.
Ukuzwa kwenja kungancipha ngokuya ngeminyaka
Njengoba inja yakho ikhula futhi ingaqali ukulandela imiyalo ngokushesha, khumbula ukuthi ukuzwa kwenja nakho kungawohloka. Mhlawumbe inja yakho ayikuzwa nje nawe.
Ngakho-ke uma uhlanganisa amasiginali omsindo nokubukwayo ngesikhathi esifanele, khona-ke lokhu akuyona inkinga ngisho nakuyo abadala. Uma inzwa eyodwa incipha, ezinye izinzwa zivele zisetshenziswe kakhulu.
Ukunakekela izindlebe zezinja
Izindlebe zezinja azidingi ukunakekelwa okuningi. Ngokuvamile, izindlebe ziyazihlanza.
Kodwa-ke, kufanele uhlole njalo izindlebe zangaphandle ngokubukeka okusheshayo. Lokhu kukuvumela ukuthi ubone izifo noma ukuhlaselwa kwama-parasite kusenesikhathi.
Ngezinye izikhathi kungase kudingeke futhi ukuhlanza indlebe kancane. Kodwa-ke, sicela ungalokothi usebenzise ama-cotton swabs kulokhu, ngisho namaswabhu kakotini ezingane.
Kwanele uma uhlanza izingxenye zangaphandle zendlebe ngendwangu emanzi. Ngokuvamile, lokhu ukunakekelwa okwanele kwempilo yezindlebe.