Air sacs

Definition (http://wordnetweb.princeton.edu/perl/webwn?o2=&o0=1&o8=1&o1=1&o7=&o5=&o9=&o6=&o3=&o4=&s=air+sac)

A tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways. (WordNet)

Preferred Units: N/A

Scope Note:
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This term is used for the following terms: 
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Approved Date
04-Apr-2013

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