Question

How will you describe the pathway of oxygen in the breathing system??

Answer 1

Answer:

Respiration begins at the nose or mouth, where oxygenated air is brought in before moving down the pharynx, larynx, and the trachea. The trachea branches into two bronchi, each leading into a lung. Each bronchus divides into smaller bronchi, and again into even smaller tubes called bronchioles.

Answer 2

The pathway of oxygen in the breathing system is described below-

• The oxygen rich air enters the body through nose and reaches the lungs through the trachea.
• In the lungs, the alveoli are present that helps in the exchange of oxygen and carbon dioxide.
• At alveoli, various factors are favourable for the diffusion of oxygen from alveoli to the red blood cells of surrounding capillaries.
• The oxygen binds the haemoglobin present in red blood cells and reaches different parts of the body through arteries.