Which part of the excretory system is responsible for the purification of blood by filtering out the waste from blood?
Blood collects the waste material from the tissues and takes it to the___, where it is filtered out of the blood capillaries. Here, the useful materials are retained by the blood.
Blood collects the waste material from the tissues and takes it to the ______ where it is filtered.
So far Sally learnt about transport of food, oxygen and water via blood. But she still wasn't clear about how blood acted as a medium for removal of waste materials from the body. She asked the doctor about the same. The doctor said that blood collects the waste material from the tissues and takes it to the ___________ where it is filtered out of the blood capillaries whereas useful materials are retained by the blood.