July 16, 2007

The Human Excretory System

Excretion is the process of eliminating waste products of metabolism and other non-useful materials. It is an essential process in all forms of life

In humans the main organs of excretion are the kidneys and accessory urinary organs, through which urine is eliminated, and the large intestines, from which solid wastes are expelled. The skin and lungs also have excretory functions: the skin eliminates water and salts in sweat, and the lungs expel water vapor and carbon dioxide.

The Excretory system is responsible for the elimination of wastes produced by homeostasis. There are several parts of the body that are in this process, such as sweat glands, the liver, the lungs, and the kidney system.

Urinary system

Large Intestine




Malphigian tubule system (Arthropod excretory system)

We will take a close look at some of them.

Adated from: WikiPedia