Facts about urine

• Adults pass about a quart and a half of urine each day, depending on the fluids and foods consumed.
• The volume of urine formed at night is about half that formed in the daytime.
• Normal urine is sterile. It contains fluids, salts and waste products, but it is free of bacteria, viruses and fungi.
• The tissues of the bladder are isolated from urine and toxic substances by a coating that discourages bacteria from attaching and growing on the bladder wall.

The Urinary System components

I. Macroscopic Kidneys

II. Nephrons

III. Renal Corpuscle

IV. Proximal Convoluted Tubule

V. Loop of Henle

VI. Distal Convoluted Tubule

VII. Collecting Tubules & Ducts

VIII. Blood Flow

IX. Ureter & Bladder

X. Urethra