Course information from the University of Cincinnati states that the excretory system is important to the human body because without it, nitrogenous wastes would build up in blood and tissues to toxic levels. The kidneys... More »

The excretory system is a system of organs that work together to rid the body of any waste. The excretory systems includes the lungs, ureter, urethra, liver, urinary bladder, kidneys and skin. The excretory system contro... More »

Some of the diseases that affect the excretory system are nephritis, kidney stones and cystitis. The excretory system helps to remove liquid waste from the body. Any failure of this system causes the waste products to ci... More »

The urinary system sustains homeostasis by eliminating wastes from the body, regulating blood acidity levels and controlling the levels of metabolites and electrolytes in the blood, such as sodium, potassium and calcium.... More »

The brain is important in the human body because it allows a person to think, feel and store memories, and it controls and coordinates the body’s actions and reactions, states the Atlanta Brain and Spine Care. The brain ... More »

Food is needed by the human body for energy, to repair and build cells and to prevent sickness and heal from it. While it is possible to obtain nutrients in a scientifically controlled manner, common food is the most eff... More »

An important buffer system in the human body is the bicarbonate buffering system that keeps human blood in the right pH range. This buffer system is essential, because exercise produces carbon dioxide and lactic acid in ... More »