Mubvunzo ndewokuti: "Arthur Guyton's Textbook of Medical Physiology inotaura kuti "uwandu hwemvura mumunhu wepakati nepakati (makirogiramu 70) hunenge huri marita 40, hunenge 57 muzana yeuwandu hwomuviri wake wose".? Nyaya yacho mvura yomuviri.
"muviri une mvura yakawanda zvakadini?"