Among air breathing animals, birds have the most effective mechanism of extracting oxygen from air because ____.
A) birds utilize crosscurrent exchange
B) bird lungs have more surface area
C) bird lungs are the largest among vertebrates
D) the air sacs provide additional respiratory surfaces
E) birds utilize positive force exchange
Correct Answer:
Verified
Q24: The respiratory surfaces of mammalian lungs are
Q25: The primary muscle(s) involved in human breathing
Q26: The _ stimulate(s) forceful inhalation and exhalation.
A)
Q27: Air movement to the mammalian respiratory surfaces
Q28: The concentration of _ has the greatest
Q30: During exhalation, the chest cavity _ in
Q31: The _ keeps the lungs from completely
Q32: The _ drive(s) inhalation by stimulating contraction
Q33: During human inhalation, the diaphragm _ and
Q34: A _ uses positive pressure breathing to
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