Surfactant helps to prevent the alveoli from collapsing by .
A) warming the air before it enters
B) protecting the surface of alveoli from dehydration and other environmental variations
C) interfering with the cohesiveness of water molecules,thereby reducing the surface tension of alveolar fluid
D) humidifying the air before it enters
Correct Answer:
Verified
Q3: The loudness of a person's voice depends
Q4: Select the correct statement about oxygen transport
Q5: With the Bohr effect,more oxygen is released
Q6: Which statement about CO2 is incorrect?
A)CO2 concentrations
Q7: Tidal volume is air .
A)forcibly expelled after
Q9: Which of the following is not found
Q10: For gas exchange to be efficient,the respiratory
Q11: Factors that influence the rate and depth
Q12: The larynx contains .
A)a cricoid cartilage also
Q13: Possible causes of hypoxia include .
A)too little
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