LUNGS OF A SWAN

The Irish Mail on Sunday - - MORE -

oUR lungs have two jobs – gas ex­changer and pump – which means they are less ef­fi­cient. A swan has sep­a­rate sacs to move air and the lungs sim­ply ex­change oxy­gen and car­bon diox­ide. A sim­i­lar one-way air flow through the lungs would make breath­ing far more ef­fi­cient and make us ex­cep­tion­ally ath­letic.

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