12. Despite the decline in the number of functional nephrons in kidneys after the age of 40, the kidneys continue to function normally because the nephrons have a tendency of enlarging once the demise begins.
13. If the nephrons in both kidneys are taken out and placed end to end horizontally, they will cover a distance of 16 kilometers.
14. If one kidney is taken away and the functional capacity of the other kidney is reduced to just 75%, it can still sustain life. This happens because the nephrons are capable of enlarging and handling excess load. This is known as hypertrophy.
15. Kidneys are responsible for maintaining a constant amount of fluid in the body. The entire blood in the body gets filtered around 400 times in a day through the kidneys.
16. When dehydration sets in, kidneys stop producing enough urine until hydration is restored and blood volume increases.
17. If the blood pressure in kidneys fall, they start sending out signals to the rest of the body. As a result of these signals, the blood vessels throughout the body become smaller to increase the pressure. This ensures that blood reaches every part of the body.