Igazi lijikeleza kuwo wonke umzimba, lihlinzeka ngemisoco yonke indawo futhi lisusa ukungcola, ngakho-ke kufanele ligcinwe ngaphansi kwezimo ezijwayelekile.Kodwa-ke, lapho umthambo wegazi ulimala futhi uqhuma, umzimba uzokhiqiza uchungechunge lokusabela, okuhlanganisa i-vasoconstriction ...
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