Question

The two main steps in the process of breathing are​

Answer 1

Answer:

Pulmonary ventilation comprises two major steps: inspiration and expiration. Inspiration is the process that causes air to enter the lungs, and expiration is the process that causes air to leave the lungs (Figure 3). A respiratory cycle is one sequence of inspiration and expiration.

Answer 2

Answer:

inhalation and exhalation are the main steps