Spirometer

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Spirometer

A spirometer is used to measure lung capacity.

The subject breaths in and out of the machine wearing a mouth peice until oxygen is used up.

As they breath in : the lid of the spirometer chamber moves down                        As they breath out: the lid  of the spirometer moves up

The carbon dioxide breathed into the spirometer is absorbed by soda line

Usually wear a nose clip so no air escapse and all of it goes into

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