A tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways
One of the spaces in different parts. of the bodies of birds, which are filled with air and connected with the air passages of the lungs; an air cell.
One of the spaces in different parts of the bodies of birds,
which are filled with air and connected with the air passages of the
lungs; an air cell.
Air sac
One of the spaces in different parts. of the bodies of birds, which are filled with air and connected with the air passages of the lungs; an air cell.
Usage Examples
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