Question

State whether the following statements are true or false.
Gas exchanges continue uninterrupted in lungs even after a forceful expiration.

• A. True
• B. False

Answer 1

The correct option is A True

Even after the most forcible expiration possible some amount of air remains in the lungs. This is known as the residual volume and is about 1200 ml. This keeps the alveoli open as some air is always present inside the lung alveoli even during expiration. So, the correct option is 'true'.