The purpose of residual air in the lungs is to _____. A) prevent ...

[AEWBW]

The purpose of residual air in the lungs is to _____.
 A) prevent the lungs from collapsing
  B) prevent the temporary stoppage of breathing
  C) allow the continuous exchange of gases between breaths

Question 2

Health care workers use a spirometer to measure the _____.
 A) level of carbon dioxide in the blood
  B) lungs' capacity for air
  C) amount of pressure in the lungs
  D) level of pleural fluid

[miss.ashley]

Answer to Question 1

C

Answer to Question 2

B

[AEWBW]

Thanks for the timely response, appreciate it

[nanny]

Gracias!