Question

tell the extinction of urine (full porcess each and every step)​

Answer 1

The substances are filtered out from the body in the form of urine. Urine is a liquid produced by the kidneys, collected in the bladder and excretedthrough the urethra. ... The Urinary organs include the kidneys, ureters, bladder, and urethra.

Answer 2

Excertory system of vertebrate including mammals is formed of one pair of kidney, one pair of ureters, a urinary bladdar and a uretha.

the total steps are
the urine areproduced in the Nephrons is passed into the collecting tubule which open in the ducts of duct of bellini. the converge toward hilum and passed through 15-16 conical renal pyramids which through major and minor calics pour their urine in renal pelvis of ureters.
ureters conduct the urine by peristalsis to urinary baldder which temporarily store urine. the bladder stretches and dilates. when a little more than half of bladder is full of urine then a micturition reflex(neural mechanism controlled by sacral segment of spinal cord Is initiated by the stretch receptors present in the wall of urinary baldder. this cause contraction of smooth muscle present in the wall of bladder and relaxation of urethral sphincter.
the contraction if bladder muacles increase the pressure in the bladder to 40-60mm hg.

it is aided by contraction of abdominal muscles.
IT DERIVES THE URINE OUT OF THE BODY THROUGH URETHA.

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