information on excretory system
Answers
Answer:
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.
Excretory
Answer and Explanation:
Excretory System Definition
The excretory system consists of organs which remove metabolic wastes and toxins from the body.
The excretory system in humans consists mainly of the kidneys and bladder. The kidneys filter urea and other waste products from the blood, which are then added to the urine within the bladder. Other organs, such as the liver, process toxins but put their wastes back into the blood. It is up to the kidneys to filter the blood so that toxic substances do not accumulate.
The excretory system has other functions beyond removing waste products from the body. It is also crucial in maintaining internal homeostasis. Parts of the excretory system are also influenced by other body systems, such as the muscular system and skeletal system. For example, the kidneys secrete a hormone which tells the bones to produce more red blood cells.
Excretory System Function
The excretory system functions as the bulwark and balance to the digestive system. While we consume food and drink to nourish the body and provide energy, the excretory system ensures that homeostasis is maintained, irrespective of changes to the nutritive value of food.
It regulates the fluid balance of the body, maintaining adequate salt and water levels. When there is excess water, it is removed through the production of hypotonic urine. When we consume salty food or lose water through perspiration, the concentration of urine is increased to preserve the osmolarity of body fluids.