Yintoni umsila weVestigial ebantwini?

Umxholo

• Yintoni i-vestigiality?
• Yintoni ebangela umsila we-vestigial?
• Yintoni umsila we-vestigial owenziwe?
• Uphathwa njani umsila we-vestigial?
• Yintoni imbonakalo yomsila we-vestigial?

Yintoni i-vestigiality?

Ubukhulu becala, amalungu akho kunye nemilenze isebenza ngenjongo, ke kuyacaca ukuba ukuphulukana nenye yezi zinto kunokuphazamisa ukusebenza komzimba wakho kwesiqhelo, kwemihla ngemihla.

Kwelinye icala, kuyaziwa ukuba amalungu athile, njengesihlomelo, angasuswa ngaphandle kwesiphumo. Kungenxa yokuba, ngelixa uninzi lwezakhiwo zomzimba ziluncedo ngendlela ecacileyo, ezinye izakhiwo ziye zalahlekelwa yimisebenzi yazo yoqobo ekuhambeni kwexesha.

I-vestigiality yomntu ibhekisa kumalungu omzimba abonakala ngathi awasasebenzi injongo. Kukholelwa ukuba ookhokho bethu, ngaxa lithile, babewafuna la malungu omzimba. Ukanti, uninzi lwezi zakhiwo luphulukene nobukhulu bemisebenzi yazo yantlandlolo, nto leyo ke ethe yenziwa into ekuthiwa “zizinto ezingenamsebenzi”.

Abanye bakholelwa ukuba ezi zakhiwo yimizekelo yendaleko yabantu. Abanye bakholelwa ekubeni amalungu abizwa ngokuba ngamalungu omzimba anenjongo, nangona ezi njongo zingekaqondwa.

Ukuzekelisa, abanye oogqirha kunye nososayensi bakha bajonga i-tonsils njengobungqina bomntu. Kodwa oososayensi kamva bafumanisa ukuba iitoni zidlala indima ekukhuseleni, ukunceda umzimba ukuba ulwe nosulelo.

Imizekelo embalwa ye-vestigiality ibandakanya:

• izinyo lobulumko
• isihlomelo
• iinwele zomzimba

Abanye abantu banomsila we-vestigial. Nangona liziko, abantu abanemisila ebonakalayo baye baqaphela kuncwadi kwimbali yonke.

Yintoni ebangela umsila we-vestigial?

Ngelixa imisila inqabile ebantwini, izakhiwo ezinje ngomsila ezinjengemisipha zifunyanwa kwimbungu yomntu. Le misila ikhula ngeenxa zonke, kwaye iqulethe malunga ne-10 ukuya kwi-12 ye-vertebrae.

Uninzi lwabantu aluzalwanga lunomsila ngenxa yokuba ulwakhiwo luyanyamalala okanye luthathe emzimbeni ngexesha lokukhula kosana olungekazalwa, lwenza umsila wethambo okanye coccyx. Umsila wethambo elingunxantathu elikwindawo engezantsi yomqolo ongezantsi kwesram.

Ukunyamalala komsila kumbungu kwenzeka ngeveki yesibhozo yokumitha.

Nangona umsila we-vestigial unyamalala kubantu abaninzi, ngamanye amaxesha umsila uhlala ngenxa yesiphene ngexesha lokuphuhliswa. Kwimeko yomsila oyinyani "oyinyani", esona sizathu soko saziwa asaziwa.

Kubalulekile ukuba uqaphele ukuba abanye abantu nabo bazalwa bepseudotail, engafaniyo nomsila we-vestigial "oyinyani". I-pseudotail ingabonakala njengomsila we-vestigial, kodwa ngokuqhelekileyo kubangelwa yi-coccyx edibeneyo okanye idibene ne-spina bifida.

Kwiintsana ezisandul 'ukuzalwa kunye ne-pseudotail yokuzalwa, i-MRIs ibonise ubungqina be-spina bifida - ukukhubazeka kokuzalwa apho umgudu kunye nomgogodla ungabonakali kakuhle.

Yintoni umsila we-vestigial owenziwe?

Xa umsila we-vestigial ungadibani ne-coccyx kwaye uhlala emva kokuzalwa, okushiyekileyo lulusu olungenamathambo. Nangona umsila ungenawo amathambo, iqulethe imithambo-luvo, igazi, izicwili ze-adipose, izihlunu ezihlangeneyo, kunye nezihlunu.

Into enomdla kukuba, umsila uyashenxiswa (kwabanye abantu) njengamanye amalungu omzimba, nangona unganiki msebenzi uluncedo. Ke ngoko, umsila awusetyenziswanga ukubamba okanye ukubamba izinto.

Uphathwa njani umsila we-vestigial?

Isigqibo sokufuna unyango ngomsila we-vestigial sixhomekeke kubukrakra bokungaqhelekanga. Eminye imisila mincinci kwaye ayibangeli ngxaki. Kodwa imisila emide inokuphazamisa ukuhlala. Le misila inokufikelela kwii-intshi ezi-5.

Kuba imisila ye-vestigial ayinathambo, le misila ayihlali ibangela iintlungu okanye ukungonwabi. Ubuhlungu bunokwenzeka nge-pseudotail kuba ziqukethe ithambo okanye i-vertebrae.

Iintsana ezizalwe zinomsila we-vestigial ziya kufuna ukwenza uvavanyo lwe-imaging njenge-MRI okanye i-ultrasound. Oku kuyimfuneko ukwahlula umsila kwaye uqiniseke ukuba awuhambelani nemeko yezonyango efana ne-spina bifida.

Utyando lunyango lomsila we-vestigial. Ngenxa yokuba umsila wenyani "oyinyani" ubunjwe yidipose kunye nezihlunu zemisipha, oogqirha banokuzisusa ngokukhawuleza ezi ntlobo zemisila ngohlobo olulula. Le nkqubo ayibangeli naziphi na iziphumo ebezingalindelekanga.

Gcina ukhumbula ukuba ukususwa akuyomfuneko kwezonyango, nangona abanye abazali bekhetha utyando ngezizathu zokuthambisa. Banokukhetha ukususwa kwesakhiwo emntwaneni wabo kungekudala emva kokuzalwa. Xa umsila we-vestigial umncinci kwaye ujongeka njenge-nub, abazali banokuyeka ukwenza utyando.

Yintoni imbonakalo yomsila we-vestigial?

Ukuba wena okanye umntwana wakho unomsila we-vestigial, ungawususa ngenkqubo elula, okanye ugcine umsila ukuba mncinci.

Ukuhlala nomsila we-vestigial akukhokeleli kwiingxaki okanye kubangele iingxaki zexesha elide. Kodwa ukuba ukhetha ukususa umsila, isibhengezo silungile kwaye ukuphulukana nesakhiwo akunaziphumo zibi.

Isigqibo sokususa okanye sokugcina ikakhulu sixhomekeke kwindlela umsila obuchaphazela ngayo ubomi bakho. Ukuba yinto ekucaphukisayo okanye ethintela ubudlelwane obusondeleyo, ukulahla ulwakhiwo kunokuphucula umgangatho wobomi bakho kwaye kwandise ukuzithemba kwakho.