呼吸/respiratory cycle in English/Lung elasticity

The lungs have inward elasticity. This works towards decreasing the lung volume. The larger the lung volume, the larger the elastic force.

Let's suppose that there are 'rubber bands' inside the lungs, and that they are lightly stretched. When the lung volume is increased, the 'rubber bands' are strongly stretched.

lung volume	min	min→max	max
inward elastic force	min	min→max	max

　　　　　　　　　　　　　　　　　　　　(within one quiet respiratory cycle)

Challenge Quiz

1.

The lungs have inward. outward  正解! elastic force. The force is larger. smaller  正解! when the lungs are increased in volume.

The elastic force of the lungs is larger when the lungs are increased. decreased  正解! in volume.

The elastic force of the lungs is smaller when the lungs are increased.decreased  正解! in volume.