Moderate

Which structure receives about 20% of total blood and has a weight less than 1% of the total body:

Correct answer: C. Kidney

  • A. Heart
  • B. Lungs
  • C. Kidney
  • D. Liver

Explanation

Option C is correct.The kidneys receive approximately 25% of cardiac output or 1250 ml/min via the renal arteries. The high renal blood flow is due to the need for filtration rather than due to metabolic demand.

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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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