In which of the following ways is the avian ventilatory system similar to the mammalian respiratory system?

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In both groups, blood at the lungs circulates in a weblike arrangement of capillaries.

  

In both groups, the chest and air sacs compress alternately.

  

In both groups, air passes through a small amount of dead space.

  

In both groups, air is inhaled through a trachea.

 

asked Dec 31, 2012 in Biology by anonymous
    

1 Answer

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In both groups, air is inhaled through a trachea.

 

answered Dec 31, 2012 by anonymous

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