Learn about The Urinary System in this educational video from dizzo95.
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Male Speaker: The Urinary System is concerned with the formation and elimination of urine. In an adult more than 2500 points of blood pass through the kidneys each day, blood and reservoir the renal arteries and is filtered to remove most of the waste products of metabolism. Seven points of filtered are produced every hour; purified blood returns to the body circulation via the renal vein, the filtering process is carried out by more than 2 million tiny kidney units are nephrons which produce a highly concentrated solution of chemicals knows as urine, which is harmful to the body if allow to remain. Urine flows from the nephrons first in the funnel shaped renal pelvis and then into the ureters, waves of muscular contraction passing down the ureters push the urine into the bladder, with continuous filling the bladder a muscular bag expands into it holds about 1 point of fluid, a circular band of muscle around the neck of the bladder sphincter controls the release of urine from the body.
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