Which is the most important organ in human excretory system?

Kidneys:- These are bean shaped organs located at the level of last thoracic and third lumbar vertebrae. It is 10–12 cm long, 5–7 cm broad, and 2–3 cm thick. It is a dark red slightly flattened organ. These contain 1–2 million nephrons per kidney. Nephrons are unit of excretion in human body. read more

Primary Excretory System Organs 1. Kidneys. Kidneys are bean-shaped organs of a reddish brown color that are found in the sides of the vertebral column. Once the body has extracted what it needs from food and drink, it sends the wastes to the kidneys. read more

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. read more