Why is proper ventilation important for a respiring animal?
A) It directly increases gas exchange between the blood and cells.
B) It maintains proper O2and CO2levels on the external side of the respiratory surface so diffusion across it can be maintained.
C) It maintains blood circulation within the body of an animal.
D) It maintains proper O2and CO2levels on the internal side of the respiratory surface so diffusion across it can be maintained.
E) It directly maintains proper O2and CO2levels in tissues.
Correct Answer:
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Q1: Which respiratory surface lacks physical protection from
Q3: As elevation increases, O2_.
A) availability increases
B) availability
Q4: In aquatic animals, the most disadvantaged in
Q5: Amphibians often use _ as a respiratory
Q6: Choose the correct order of tracheal system
Q7: O2is transported from air in the lungs
Q8: The _ cells are most sensitive to
Q9: Why does countercurrent exchange optimize gas exchange
Q10: Water is an optimal respiratory medium because
Q11: In humans, _ is involved in both
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