kidneys
The kidneys filter the blood.
the kidney filter blood
the kidney is the major organ that filters the waste blood
Well blood travels through a person's arteries and i suppose the skin being the largest organ in the body would be what holds it in.
In human body, the excretion is necessary.there are some organ which perform this function eg.Kidney which filter urea from blood,urea is a nitrogenous waste which is harmful for human body. There are some other organ which involve in excretion in invertebrate like malpighian tubles and in earthworm by nephridia.
liver
The spleens primary function is to filter blood of damaged cells. The spleen is the largest organ of the lymphatic system.
Kidney is an internal organ. They filter blood and produce urine.
The blood.
Kidneys filter blood and remove waste.
the heart
Liver