Breathing: how? 1.Finish the worksheets from last lesson 2.Complete the task below! Put your hands on your hips Breathe in and out deeply How does this.

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Presentation transcript:

Breathing: how? 1.Finish the worksheets from last lesson 2.Complete the task below! Put your hands on your hips Breathe in and out deeply How does this happen? – Write a short paragraph explaining this mechanism!

The spirometer and breathing apparatus Objectives: To understand how a spirometer works To be able to give advantages and disadvantages of positive and negative breathing apparatus

The spirometer

The trace

Respiratory diseases  Reduced air flow: asthma, emphysema, bronchitis  Infections: pneumonia, tuberculosis, botulism  Lung cancer  Congestive heart failure  Cystic fibrosis

Negative pressure: iron lungs

Martha mason Contracted Polio at the age of 11 Paralysed from the neck down Unable to breathe on her own Put into an iron lung… Martha Mason clip

Positive pressure: ventilators

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