Front

What is the main function of the respiratory system?

Back

To facilitate the exchange of oxygen and carbon dioxide between the body and the environment.

Front

What organ is responsible for the exchange of gases in the lungs?

Back

Alveoli.

Front

What is the role of the diaphragm in breathing?

Back

The diaphragm contracts to allow air into the lungs and relaxes to push air out.

Front

What is the trachea commonly known as?

Back

The windpipe.

Front

What are bronchi?

Back

The two main tubes that branch from the trachea and lead into each lung.

Front

What happens to the lungs when the diaphragm contracts?

Back

The lungs expand, allowing air to flow in.

Front

What is the function of the nose in the respiratory system?

Back

To filter, warm, and humidify the air before it enters the lungs.

Front

What is the difference between the left and right lungs?

Back

The left lung has two lobes, while the right lung has three lobes.

Front

What is the purpose of mucus in the respiratory system?

Back

To trap dust, pathogens, and other particles, keeping the airways clear.

Front

What is the role of cilia in the respiratory system?

Back

To move mucus and trapped particles out of the airways.