Moderate

The net difference between the fluid taken back by blood capillaries from interstitial spaces and the fluid given out by blood capillaries into the interstitial spaces in an average person per day is:

Correct answer: C. 3000 ml

  • A. 1000 ml
  • B. 2000 ml
  • C. 3000 ml
  • D. 4000 ml

Explanation

In an average person, about three liters more fluid leaves the blood capillaries than is reabsorbed by them each day. Lymphatic system returns this excess fluid and its dissolved proteins and other substances to the blood.

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About Circulation

The circulatory system covers the chambers, valves and conducting pathway of the human heart, along with the cardiac cycle and control of heartbeat. It compares arteries, veins and capillaries by structure and function, and explains how the lymphatic system returns tissue fluid, transports absorbed fats and supports immunity.

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