The excretory system is a passive biological system that removes excess, unnecessary materials from the body fluids of an organism, so as to help maintain internal chemical homeostasis and prevent damage to the body. The dual function of excretory systems is the elimination of the waste products of metabolism and to drain the body of used up and broken down components in a liquid and gaseous state. In humans and other amniotes mammals, birds and reptiles most of these substances leave the body as urine and to some degree exhalation, mammals also expel them through sweating. Only the organs specifically used for the excretion are considered a part of the excretory system. In the narrow sense, the term refer to the urinary system. However, as excretion involves several functions that are only superficially related, it is not usually used in more formal classifications of anatomy or function.
CATEGORIES
Your video is downloading.
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
More videos on Dreamstime
Similar Videos
More videos by the same author
Special Dreamstime offer
1 week free trial. Any size, for free
Renews at $25/month, cancel or upgrade at any time
Click here for your free trial!
240,422,588 images | 1,213,444 contributors | 53,264,736 total users