Which of the following is true? a. Mammals have the most efficient lungs of any living...
Which of the following is true?
a. Mammals have the most efficient lungs of any living vertebrates
b. Breathing rate is largely determined by blood O2 concentration
c. Gas exchange in water is far more efficient than gas exchange in air.
d. In a mammalian lung there is no functional gas exchange across the trachea, bronchus or bronchioles
Homework Answers
ANSWER :
The most efficient lungs are found in avian vertebrates (birds) since gas exchange perform in the wall of microscopic tubules (air capillaries) which provide larger surface to transfer more oxygen. But mammalian lungs have no functional gas exchange across the trachea, bronchus or bronchioles.
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