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Functional residual capacity is?

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Functional residual capacity is? Answer: the amount of air left in the lungs at the end of normal resting expiration

Functional residual capacity is the volume of gas remaining in the lungs after a normal passive expiration. It is composed of the expiratory reserve volume plus residual volume and helps maintain relatively continuous pulmonary gas exchange between breaths.

Question context

This question is part of 🧫 Biotechnology within the broader 🧬 Medical Science subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.