In order to adapt to thhigh oxygen demands of flight, birds
A) have simple lungs.
B) have air sacs connected to their lungs.
C) use carbon dioxide for respiration.
D) can diffuse oxygen through the roof of their mouth.
E) have simple lungs, and can diffuse oxygen through the roof of their mouth.
Correct Answer:
Verified
Q53: A largrespiratory surface
A)results in a slow rate
Q54: After a largmeal
A)arteries supplying blood to the
Q55: Ththinnest vessels in thhuman circulatory systearthe
A)veins.
B)capillaries.
C)arteries.
D)arterioles.
E)venules.
Q57: Humans _ air into their lungs, anfrogs
Q59: _ is thlowest bloopressurof thcardiac cyclanoccurs when
Q60: Varicosveins
A)may result when vein valves fail.
B)may result
Q61: Use the above diagram to answer questions
Q62: When a spacinsidan artery becomes narrowed, thcondition
Q63: A genetic disorder that involves impaireblooclotting is
A)leukemia.
B)sickle
Q110: Lungs are
A) internal organs with respiratory surfaces
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