Igazi lijikeleza kuwo wonke umzimba, libonelela ngezondlo kuyo yonke indawo kwaye lithatha inkunkuma, ngoko kufuneka ligcinwe phantsi kweemeko eziqhelekileyo.Nangona kunjalo, xa umthambo wegazi wonzakele kwaye ugqabhukile, umzimba uya kuvelisa uthotho lweempendulo, kubandakanya i-vasoconstriction ...
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