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Topic last updated: 29 Sep 2021
    • Ico Human Biology Human biology
    • Biologybiology Biology
    • Ico Physical Education Physical education
    • 11-14
    • 14-16
    • 55

Breathing and asthma

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Breathing

Reflect on the fact that cloning plants has been done for years.

Understand that there are different types of cloning, using different techniques and producing different outcomes.

Think about the implications of cloning technology on the future of medical treatment.

Consider the ethics of cloning.

Measuring the volume of the lungs

Measuring the volume of the lungs

The volume of the lungs

The amount of air you breathe in and out as you inhale and exhale quietly is only part of the total volume of your lungs. This means that when you need more oxygen – for example when you are exercising hard – you can take much deeper breaths.

Scientists measure the volume of the lungs using a piece of apparatus called a spirometer. This can be very simple or very complex. A spirometer can measure both the amount of air that moves in and out of the lungs in normal breathing and the amount of air that you can move in and out of your lungs when you breathe as deeply as possible.