Which statement best describes breathing differences in younger children?

• A. Lower respiratory rates
• B. Lungs have more room
• C. Higher RR increases inhalation of toxins
• D. Ribs expand only out

Answer: (C)

Young children breathe faster than adults, which means more air passes through their airways per minute. Even though their tidal volume is smaller, the higher rate increases minute ventilation, so more environmental air—and the toxins or irritants it contains—can be inhaled each minute. That’s why this statement best describes how breathing in younger kids contributes to greater exposure to airborne toxins. The other ideas aren’t accurate: kids don’t have lower breathing rates, their lungs aren’t larger or giving them more “room,” and their chest wall expansion isn’t limited to outward motion alone—the ribs and diaphragm both contribute to breathing in a flexible chest.