Question

Why does the air taken into the body need to be heated and humidified? a) To protect the heart. b) To protect the respiratory system. c) To protect the brain. d) To keep the lungs warm.

Answer 1

The air that is inhaled is heated and humidified in the nasal passages to protect the respiratory system from damage by cold, dry air, to help ward off infections and to facilitate gas exchange.

So, the correct answer is B.

Step-by-step explanation:

The air taken into the body through the respiratory system needs to be heated and humidified within the nasal passages before reaching the lungs. This is crucial for multiple reasons: protecting the respiratory system from potential damange caused by cold, dry air; warding off infection by trapping particulate matter and pathogens in mucus; and facilitating the gas exchange process. The warm, moist conditions prevent damage to the trachea and lungs and foster a hospitable environment for the delicate tissue within the respiratory system.

So, the correct answer to why the air needs to be heated and humidified is to protect the respiratory system, making option b) the correct choice. Additionally, this process of warming and humidifying helps to prevent lung infections, remove foreign objects, and prevent cell damage, thus safeguarding overall respiratory health.

So, the correct answer is B.