how is urine produced and eliminated
Answers
Answer :-
First of all, what is urine?
Ans - "Urine" can be defined as the liquid waste material of the body which helps in the removal of harmful wastes such as "Urea" from the body.
Formation and elimination of urine :-
Blood from the heart comes into the Kidneys's afferent and efferent arterioles from the renal arteries where it enters about 2-3 million *Nephrons per kidney.
Then, the blood goes through the glomerulus (a tugt or bunch of blood capillaries) to get rid of some of the unwanted substances such as urea, uric acid, creatinine, etc, and then continues to flow through the renal tubules.
The loop of Henley re-absorbs certain useful substances such as water, minerals, etc.
After the absorption of water and minerals, the urine goes through the ureters to the urinary bladder where it is stored and according to the wish of the organism, is let out of the body through the Urethra.
Extra Information :-
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If the body is de-hydrated, the brain sends a signal to secrete A.D.H. (Anti-Diuretic Hormone) to prevent extra water from going into urine thus, saving water for the body.
*Note :-
Nephrons are the basic filtration units which are present inside the kidneys.
Urine is formed in the kidneys through a filtration of blood. The urine is then passed through the ureters to the bladder, where it is stored. During urination, the urine is passed from the bladder through the urethra to the outside of the body.
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