Gcse Pe Paper 1- Understanding Spirometer Traces

The video tutorial explains spirometry, a method to measure lung volumes: tidal volume, inspiratory reserve volume, expiratory reserve volume, and residual volume. Tidal volume is the air exchanged in a normal breath. Inspiratory reserve volume is the extra air inhaled after a normal breath, while expiratory reserve volume is the extra air exhaled. Residual volume is the air remaining in the lungs after maximal exhalation. During exercise, tidal volume increases, reducing inspiratory and expiratory reserve volumes, but residual volume remains constant.

What does a spirometry device primarily measure?

• Heart rate

• Blood pressure

• Body temperature

• Lung volumes

What is the inspiratory reserve volume?

• The maximum air inhaled beyond a normal breath

• The air exchanged in a normal breath

• The air exhaled forcefully after a normal breath

• The air left in the lungs after exhaling

What is the residual volume in the lungs?

• The air exhaled forcefully after a normal breath

• The air exchanged in a normal breath

• The air inhaled during exercise

• The air left in the lungs after maximal expiration

How does tidal volume change during exercise?

• It increases

• It fluctuates randomly

• It remains constant

• It decreases

Which lung volume remains unchanged during exercise?

• Tidal volume

• Inspiratory reserve volume

• Residual volume

• Expiratory reserve volume