Kidneys receive _% of blood supplied with each cardiac beat.
Correct answer: D. 20
- A. 1
- B. 10
- C. 5
- D. 20
Explanation
Kidney contribute less than 1% of the total body weight but they receive 20% of the total blood of the body by each cardiac beat. This indicates their physiological importance.
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About Homeostasis
Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.
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