The kidneys perform their functions by-
- Filtration of blood plasma in the glomeruli,
- Selective reabsorption by the tubules of substances which the body needed to retain,
- Active excretion by the tubules of certain substances to be added to the urine and
- Exchange of Hydrogen ions and formation of ammonia as a part of the process of acid base regulation.
‘Excretion of Urine’ part will be discussed in detail in physiology course.
