Uyini Umsila We-Vestigial Kubantu?

-Delile

• Kuyini i-vestigiality?
• Yini ebangela umsila we-vestigial?
• Yini umsila we-vestigial owenziwe?
• Uphathwa kanjani umsila we-vestigial?
• Uyini umbono womsila we-vestigial?

Kuyini i-vestigiality?

Ngokwengxenye enkulu, izitho zakho nezitho zomzimba zisebenza ngenjongo, ngakho-ke kunengqondo ukuthi ukulahlekelwa okukodwa kwalokhu kungaphazamisa ukusebenza komzimba wakho okujwayelekile, kwansuku zonke.

Ngakolunye uhlangothi, kwaziwa kahle ukuthi izitho ezithile, njengesithasiselo, zingasuswa ngaphandle kwemiphumela eminingi. Lokho kungenxa yokuthi, yize izakhiwo eziningi zomzimba zilusizo ngendlela esobala, ezinye izakhiwo zilahlekelwe yimisebenzi yazo yasekuqaleni ngokuhamba kwesikhathi.

I-vestigiality yomuntu ibhekisa ezingxenyeni zomzimba ezibonakala zingasasebenzi injongo. Kukholakala ukuthi okhokho bethu, ngesikhathi esithile, babedinga lezi zitho zomzimba. Noma kunjalo, eziningi zalezi zakhiwo zilahlekelwe umsebenzi wazo wokuqala, empeleni zaba yilokho abanye abakubiza ngokuthi “izitho ezingenamsoco.”

Abanye bakholelwa ukuthi lezi zakhiwo ziyizibonelo zokuziphendukela kwabantu. Abanye bakholelwa ukuthi izitho ezibizwa nge-vestigial zinayo injongo, yize lezi zinhloso zingakaqondakali.

Ukufanekisa, abanye odokotela nososayensi bake bacabanga ukuthi amalaka angaba wumuntu. Kodwa ososayensi kamuva bathola ukuthi amalaka adlala indima ekuvikeleni izifo, esiza umzimba ukulwa nezifo.

Izibonelo ezimbalwa ze-vestigiality zifaka:

• amazinyo okuhlakanipha
• isithasiselo
• izinwele zomzimba

Abanye abantu banomsila we-vestigial. Yize kuyinhlangano, abantu abanemisila ebonakalayo baye babonwa ezincwadini kuwo wonke umlando.

Yini ebangela umsila we-vestigial?

Ngenkathi imisila ingavamile kakhulu kubantu, izakhiwo zesikhashana ezinjengomsila zitholakala kumbungu womuntu. Le misila ikhula izungeze i-vertebrae eyi-10 kuye kwayi-12.

Iningi labantu alizalwa linomsila ngoba isakhiwo siyanyamalala noma simunceke emzimbeni ngesikhathi sokukhula kombungu, kwakheka i-tailbone noma i-coccyx. I-tailbone iyithambo elingunxantathu elitholakala engxenyeni engezansi yomgogodla ngaphansi kwe-sacrum.

Ukunyamalala komsila embungwini kwenzeka cishe ngesonto lesishiyagalombili lokukhulelwa.

Yize umsila we-vestigial unyamalala kubantu abaningi, kwesinye isikhathi umsila uhlala ngenxa yesici ngesikhathi sokukhula. Endabeni yomsila we-vestigial "weqiniso", imbangela ngqo yalesi sici ayaziwa.

Kubalulekile ukuqaphela ukuthi abanye abantu nabo bazalwa bephethe i-pseudotail, engafani nomsila we-vestigial "weqiniso". I-pseudotail ingabukeka njengomsila we-vestigial, kepha uqobo ibangelwa yi-coccyx enwetshiwe noma ixhunywe ku-spina bifida.

Ezinganeni ezisanda kuzalwa ezine-pseudotail yokuzalwa, ama-MRIs akhombise ubufakazi be-spina bifida - ukukhubazeka kokuzalwa lapho umgogodla nomgogodla ungakheki kahle.

Yini umsila we-vestigial owenziwe?

Lapho umsila we-vestigial ungazihlanganisi ne-coccyx futhi uhlala ngemuva kokuzalwa, okusele yisikhumba esingenawo amathambo. Yize umsila ungenawo amathambo, uqukethe izinzwa, igazi, izicubu ze-adipose, izicubu ezihlangene kanye nemisipha.

Ngokuthakazelisayo, umsila nawo uyasuswa (kwabanye abantu) njengezinye izitho zomzimba, yize unganikezi umsebenzi owusizo. Ngakho-ke, umsila awusetshenziswanga ukubamba noma ukubamba izinto.

Uphathwa kanjani umsila we-vestigial?

Isinqumo sokufuna ukwelashwa ngomsila we-vestigial sincike ebucayi bokungajwayelekile. Eminye imisila mincane futhi ayibangeli zinkinga. Kepha imisila emide ekugcineni ingaphazamisa ukuhlala. Le misila ingaba ngamasentimitha ama-5.

Njengoba imisila ye-vestigial ingenalo ithambo, le misila ngokuvamile ayibangeli ubuhlungu noma ukungaphatheki kahle. Ubuhlungu bungavela nge-pseudotail ngoba buqukethe ithambo noma i-vertebrae.

Izingane ezizalwe zinomsila we-vestigial kuzodingeka zivivinywe njenge-MRI noma i-ultrasound. Lokhu kuyadingeka ukuhlukanisa umsila futhi uqiniseke ukuthi awuhlotshaniswa nesimo sezokwelapha njenge-spina bifida.

Ukuhlinzwa ukwelashwa komsila we-vestigial. Ngoba umsila we-vestigial "weqiniso" wakhiwe yi-adipose kanye nezicubu zemisipha, odokotela bangasusa ngokushesha lezi zinhlobo zemisila ngokugunda okulula. Le nqubo ayibangeli imiphumela emibi eseleyo.

Khumbula ukuthi ukususwa akudingekile kwezokwelapha, yize abanye abazali bekhetha ukuhlinzwa ngezizathu zezimonyo. Bangakhetha ukukhishwa kwesakhiwo enganeni yabo ngemuva nje kokuzalwa. Lapho umsila we-vestigial mncane futhi ubukeka njenge-nub, abazali bangakuyeka ukuhlinzwa.

Uyini umbono womsila we-vestigial?

Uma wena noma ingane yakho inomsila we-vestigial, ungawususa ngenqubo elula, noma ugcine umsila uma umncane.

Ukuhlala nomsila we-vestigial akuholeli ezinkingeni noma kudala izinkinga zesikhathi eside. Kodwa uma ukhetha ukususa umsila, ukubikezela okuhle futhi ukulahlekelwa kwesakhiwo akunayo imiphumela emibi.

Isinqumo sokususa noma sokugcina sincike kakhulu ekutheni umsila uyithinta kanjani impilo yakho. Uma kuyinto ekucasulayo noma evimbela ubudlelwano obuseduze, ukuqeda isakhiwo kungathuthukisa ikhwalithi yempilo yakho futhi kwandise ukuzethemba kwakho.