Mubvunzo ndewokuti: "Muzvokurapa kwemwoyo, pfungwa yaErb inoreva nzvimbo yechitatu iri pakati pemakumbo pamuganhu wokuruboshwe wechifuva apo S2 yakanakisisa inonzwika."? Nyaya yacho ipfungwa yaErb (cardiology).
"chii chinonzi erb/mwoyo?"