
Excretion - Wikipedia
Excretion is elimination of metabolic waste, which is an essential process in all organisms. In vertebrates, this is primarily carried out by the lungs, kidneys, and skin. [1]
Excretion | Definition, Systems, Examples, Importance, & Facts
Dec 3, 2025 · Excretion is a general term referring to the separation and throwing off of waste materials or toxic substances from the cells and tissues of a plant or animal.
16.2 Organs of Excretion – Human Biology
Some human body wastes are gases, some are solids, and some are in a liquid state. Getting rid of body wastes is called excretion, and there are a number of different organs of excretion in the human …
Excretion - Definition, Function, Types, Examples, Metabolites
Nov 28, 2025 · Excretion is the biological process by which organisms eliminate metabolic wastes such as urea, ammonia, CO₂, excess water, and salts. Humans excrete waste through kidneys, lungs, …
The Excretory Function: Organs and Processes - Biology Insights
Jul 24, 2025 · Excretion refers to the removal of metabolic waste products generated by cells as a result of their biological activities. These wastes, such as urea from protein breakdown or carbon dioxide …
What Is Excretion? The Body’s Waste Removal System
Nov 20, 2025 · Excretion is the process by which an organism removes the waste products generated by its metabolism. These wastes are chemical by-products of cellular activity, such as the breakdown …
Excretion - Metabolites, Waste, Urine | Britannica
Dec 3, 2025 · The physiological process by which an organism disposes of its nitrogenous by-products is called excretion. The mechanisms for that process constitute the excretory systems, particularly …
Excretion Definition - General Biology I Key Term | Fiveable
Excretion is the biological process through which animals eliminate waste products generated from metabolic activities. This process is essential for maintaining homeostasis, as it helps to regulate the …
EXCRETION Definition & Meaning - Merriam-Webster
Dec 7, 2016 · The meaning of EXCRETION is the act or process of excreting. How to use excretion in a sentence.
What Is Excretion? The Purpose and Process in the Body
Excretion is a biological process that removes waste products from living organisms. These wastes are byproducts of metabolic activities within cells. Removing these substances is essential for …