Lung + bronchi diagram

Authored by Dr Beverley Kenny, 30 Jul 2010

Reviewed by:
Dr Tim Kenny, 30 Jul 2010

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For the past few days, I've been yawning a lot, much more than average (once every few minutes I feel the need). If I'm not yawning I'm breathing in as deep as I can to get similar "satisfaction"....

FlutterbyPie
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