Question

Arrange the following steps of respiration properly: 1\. Breathing or pulmonary ventilation by which atmospheric air is drawn in and \(\mathrm{CO}_{2}\) rich alveolar air is released out. 2\. Diffusion of gases \(\left(\mathrm{O}_{2}\right.\) and \(\mathrm{CO}_{2}\) ) across alveolar membrane. 3\. Transport of gases by the blood. 4\. Diffusion of \(\mathrm{O}_{2}\) and \(\mathrm{CO}_{2}\) between blood and tissues. 5\. Utilization of \(\mathrm{O}_{2}\), by the cells for catabolic reactions and resultant release of \(\mathrm{CO}_{2}\). (a) \(1,2,3,4,5\) (b) \(1,3,2,5,4\) (c) \(5,4,3,1,2\) (d) \(3,4,5,2,1\)

Short answer

The correct sequence of steps in the respiration process is option (a) which is 1,2,3,4,5.

Step-by-step solution

Identify the respiration process

Identify the order in which these processes are carried out during respiration. Breathing in draws atmospheric air into the body and releases CO2 rich alveolar air out, this is the first step in the respiration process.

Arrange the events of respiration

After inhaling the air, gases (O2 and CO2) diffuse across the alveolar membrane, from where they're transported by blood to where they're needed in the body. O2 and CO2 diffuse between blood and tissues. And finally, O2 is utilized by cells for catabolic reactions, releasing CO2 as a result.

Match the sequence

Match this sequence of steps with the options provided in the question. Option (a) 1,2,3,4,5 matches the corrected arranged sequence of steps in the respiration process.