Multiple choice general knowledge science & technology

The Principle function of the respiratory system are

  1. Ventilate the lungs

  2. Extract oxygen from air and transfer it into bloodstream

  3. Excrete carbon dioxide and water vapour.

  4. Maintain the acid base of the blood.
Reveal answer Fill a bubble to check yourself
A,B,C,D Correct answer
Explanation

The respiratory system performs multiple vital functions. Ventilation moves air in and out of lungs. Gas exchange transfers oxygen into blood and removes carbon dioxide. The system also eliminates water vapor and helps regulate blood pH by controlling carbon dioxide levels.

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