Question

Using only flow chart write the path of O2 from trachea to respiratory tissue cell.

Answer 1

Flow of O₂ from the trachea to the respiratory tissue cell:

1. The trachea, also known as the windpipe, functions as the airway and connects the larynx to the bronchi of the lungs.
2. Bronchi are the main respiratory airways found in the lungs and they are responsible for the conduction and cleaning of the air present in the respiratory pathway.
3. In the lungs, oxygen is absorbed from the air into the alveolar walls by the process of diffusion.
4. This oxygen then moves from the alveoli to the blood through the small blood vessels known as blood capillaries present in the alveolar walls.
5. Oxygen is transported to the different tissues in the body with the help of a protein known as hemoglobin present in the RBC in the blood.
6. Oxygen binds to hemoglobin and forms oxyhemoglobin which transports oxygen from the lungs to the tissues.
7. The flow chart representing the path of O2 from the trachea to the respiratory tissue cell is:

Trachea → Bronchi → Bronchioles → Alveolar duct → Alveolar sac → Alveoli → Blood capillary → RBC → Hemoglobin → Respiratory tissue cell.