Multiple choice general knowledge science & technology

What filters wastes and other harmful substances from the blood?

  1. Heart

  2. Intestine

  3. Liver

  4. Kidney
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The liver acts as the body's primary filtration system, removing toxins, drugs, and waste products from the blood before it circulates to the rest of the body. While kidneys also filter blood (removing urea for excretion), the liver is the first-pass filter for most harmful substances absorbed from the digestive tract. The heart pumps blood and the intestine absorbs nutrients.

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