Bell jar model - breathing

What does the glass bell jar represent?

• alveolus

• ribcage

• lungs

• mouth

What represents the lungs in the model?

• glass jar

• rubber sheet

• balloons

• glass tubing

When the rubber sheet is pulled down , pressure.....

• increases

• decreases

• stays the same

When the rubber sheet is raised up , volume.....

• increases

• decreases

• stays the same

What part does the rubber sheet represent?

• muscles

• rib cage

• alveolus

• diaphragm

During inspiration, air moves....

• in

• out

• both ways

• shake it all about

Why is the glass jar/dome NOT a good representation of the rib cage?

• wrong colour

• wrong shape

• wrong place

• glass jar / dome does not move