أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
simply, the whole human body. every organ is weak by itself.
Circulatory System is very important in the human body. It not only supplies Oxygen to all the parts of body but also picks up Carbon-dioxide from the body cells. For instance if Oxygen supply to the brain is blocked for two minutes it may cause death.
