Question

what step taken in the respiration sytem in human beings

Answer 1

The gas exchange process is performed by the lungs and respiratory system. Air, a mix of oxygen and other gases, is inhaled. In the throat, the trachea, or windpipe, filters the air. The trachea branches into two bronchi, tubesthat lead to the lungs
hope it helps you..

Answer 2

1 ] inhaling

2 ] purification of air from dust particles by hair in nose 

3 ] passes through bronchi and bronchules 

4 ] inflates the alvioli 

5 ] lungs expand 

6 ] alveoli put oxygen in blood and take co2 and exhales it