Question

State whether the following statements are true or false. If false, rewrite the correct form of the statement by changing word/words.

(d) Pressure of air in the lungs decreases during expiration.

• A. True
• B. False

Answer 1

The correct option is B False

1. Pressure of air in the lungs increases during expiration.
2. During expiration, the rib cage moves inwards. The diaphragm relaxes and returns to its dome shape.
3. As a result of the movement of the rib cage and diaphragm, the volume within the lungs decreases. As the volume decreases the pressure within the lungs increases and goes higher than the atmospheric pressure.

Final answer: The given statement is false.