ventilation in birds is accomplished by expansion and contraction of the
Added by Yvonne A.
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Birds have a unique respiratory system that includes air sacs in addition to their lungs. Show more…
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Which characterizes the lungs of birds? Air flows unidirectionally through them. There is gas exchange in the parabronchi. They expand during inhalation. They are compressed during exhalation. They are larger than those of similar-sized mammals.
Shveta P.
The bird respiratory system allows for efficient gas exchange because air sacs allows the recycling of the air for more O2 extraction birds have much greater concentrations of carbaminohemoglobin air sacs function as additional exchange surfaces birds have unusually large lungs the parabronchi air flow runs opposite the blood flow
Maitreya E.
Why is ventilation in birds considered much more efficient than ventilation in humans and other mammals?
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