Multiple choice

Dialysis is done when

  1. the heart stops functioning

  2. the kidneys fail

  3. the liver stops functioning

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Dialysis is a medical procedure that artificially removes waste products and excess fluid from blood when kidneys can no longer perform these functions. It acts as an artificial kidney, filtering blood to maintain the body's chemical balance when renal failure occurs.

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