In which organ RBC are selectively destroyed/ recycled by macrophages?
Correct answer: A. Spleen
- A. Spleen
- B. Kidney
- C. Liver
- D. Pancreas
Explanation
The spleen filters blood and its macrophages remove old or damaged RBCs, recycling their iron and other components. The liver also helps clear worn-out RBCs through Kupffer cells, so students may choose it, but the spleen is the main organ associated with selective RBC destruction and recycling.
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About Lymphatic System
The lymphatic system returns excess tissue fluid to the bloodstream and supports immune defence through lymph, lymph vessels, lymph nodes, the spleen, thymus and tonsils. It also transports absorbed fats from intestinal lacteals, which distinguishes lymphatic circulation from the blood vascular system.
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