1 The kidneys are used to remove excess water and ions from the blood. 2  These are then expelled as urine. 3  The kidneys perform a vital role in homeostatic regulation in mammals, removing excess water, salt, and urea from the blood.
Ectoparasites Parasites that live on the outside of the host, either on the skin or the outgrowths of the skin, are called ectoparasites. They are directly transmitted between hosts.
A definition of the term superparasitism, which refers to a condition under which the host is infested with parasites whose numbers are more than what can be supported, is presented. 1  anthropophilic. // 2  Taber's Cyclopedic Medical Dictionary (2009);2009, Issue 21, p143. definition of the term superparasite, which refers to a parasite living upon another parasite or a parasite engaged in superparasitism, is presented. 1  superparasitism. // 2  Taber's Cyclopedic Medical Dictionary (2009);2009, Issue 21, p2240.