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Question

In a scenario where excess extracellular fluid is not drained back into the blood, which system's malfunction is most likely responsible?

This question was previously asked in
RRB Group D 2025 Question Paper (18-Aug-2026) (Shift 1)
The correct answer is

Lymphatic system

Some plasma leaks out of the capillaries into the spaces between cells as extracellular (tissue) fluid.

This excess fluid is collected by lymph vessels and returned to the blood through the lymphatic system.

If the lymphatic system fails, the fluid is not drained back and collects in the tissues, causing swelling.

Hence, the answer is lymphatic system.

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