At what point in the respiratory cycle is the equilibrium point reached?
I.Inspiration
II.End-inspiration
III.Expiration
IV.End-expiration
A) II and IV only
B) II only
C) IV only
D) 1 and III only

Question

Quizplus · Accepted Answer

The equilibrium point in the respiratory cycle is reached at end-inspiration and end-expiration, where the forces driving air in or out of the lungs are balanced with the elastic recoil of the lungs and chest wall, resulting in no net air flow.

At What Point in the Respiratory Cycle Is the Equilibrium