The function of lymph node is to filter_.
Correct answer: B. Lymph
- A. Blood
- B. Lymph
- C. Semen
- D. Amniotic fluid
Explanation
Lymph is a clear, colorless fluid that closely resembles blood plasma and is filtered by the lymph nodes. It originates from the blood plasma that seeps out of the capillaries into the tissues to supply oxygen and nutrients to cells. As blood plasma diffuses into the tissues, it also collects waste products, cellular debris, and pathogens, becoming interstitial fluid. This interstitial fluid, now called lymph, is collected by lymphatic vessels and returned to the bloodstream for recirculation.
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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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