Figure 23-2 Mechanics of Ventilation

Use Figure 23-2 to answer the following questions:
-What is the relationship between the pressures at label "8"?

Question

Figure 23-2 Mechanics of Ventilation
 
Use Figure 23-2 to answer the following questions:
-What is the relationship between the pressures at label "8"?
A) P outside = P inside 
B) P outside > P inside 
C) P outside < P inside 
D) P outside + P inside 
E) P outside - P inside

Quizplus · Accepted Answer

At label "8", the pressure inside the alveoli (P inside) is greater than the pressure outside the body (P outside). This pressure gradient causes air to flow out of the lungs during exhalation, following the path from the alveoli to the atmosphere. Therefore, the correct relationship between the pressures is P outside < P inside.