Ukuphefumla

Ixesha elilungele umfanekiso wemagnethi ye-thorax yomntu ngelixa lokuphefumla

Ukuphefumla ( ukuphefumla okanye ukungena komoya ) yinkqubo yesingqisho yokuhambisa umoya ngaphakathi ( inhalation ) kunye nokuwukhuphela ngaphandle ( exhalation ) imiphunga ukuze kube lula ukutshintshiselana ngegesi kunye nendalo yangaphakathi, ikakhulu ukukhupha i<em>carbon dioxide nokuzisa ioksijini .