1.Introduction

In this website we focus our attention on osmoregulation and excretion in organisms. A distinction is made between animals like fish and humans, as to how they regulate water and salt to maintain its osmotic and solute balance, as it is further explained as processes of regulating body fluids and secretion of body wastes or unwanted materials in the blood system like urea, ammonia and uric acid. Organs involved in this processes, like the kidney and internal structures which are essential for excretion. We will focus our attention on understanding the direction or movements of substances within kidneys which form part of the urinary system. Osmoregulation is about balance, so we focus on how excretion and acquiring substances work with one another to keep our bodies active. The content page provides you with notes in which you can study for your own understanding, blogs and wiki's will continually give you more information and some activities you will be required to complete, so you are required to at least visit twice a week.