Question

If the volume of the lungs increases, What happens to the air pressure inside the lungs?

1) decreases
2) increases twice the amount of the increase in volume
3) increases and possibly damages the lungs
4) increases
5) remains constant

Answer 1

When the volume of the lungs increases, the air pressure inside the lungs decreases due to Boyle's Law. This allows air to rush into the lungs during inhalation.

Step-by-step explanation:

When the volume of the lungs increases, the air pressure inside the lungs decreases. This is due to Boyle's Law, which states that as the volume of a gas increases, the pressure decreases, and vice versa. During inhalation, the diaphragm and intercostal muscles contract, causing the volume of the lungs to increase and the pressure to decrease. This decrease in pressure allows air to rush into the lungs.