Question

Give any two reasons why breathing through nose is beneficial than through mouth.

Answer 1

1. Air exhaled through the nose causes a backflow of air into the lungs because the nostrils are smaller than the mouth.
2. The lungs have more time to draw oxygen from the air we have previously inhaled because we exhale more slowly through the nose than through the mouth.
3. The vestibule, or hairs inside the nostrils, filters out dust and bacteria from the air that is inhaled, allowing only clean air to pass through.
4. As the air enters our body, it becomes warmer and more humid in our nostrils (conditioner).
5. Smell can be detected by olfactory chambers.