Respiratory System

Front

What is the primary function of the respiratory system?

Back

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

Front

What are alveoli?

Back

Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide occurs.

Front

What is the role of the diaphragm in respiration?

Back

The diaphragm is a muscle that contracts and relaxes to help draw air into the lungs and push it out.

Front

What is the trachea?

Back

The trachea, or windpipe, is the tube that connects the throat to the lungs, allowing air to pass through.

Front

What are bronchi?

Back

The bronchi are the two main branches that split from the trachea and lead into each lung.

Front

What happens to carbon dioxide levels in the lungs when you hold your breath?

Back

CO2 levels increase because the circulatory system continues to deliver CO2 to the lungs without exhaling.

Front

How does oxygen enter the bloodstream?

Back

Oxygen enters the bloodstream through the alveoli in the lungs.

Front

What is the function of bronchioles?

Back

Bronchioles are small air passages that branch from the bronchi and lead to the alveoli.

Front

Why does your heart beat faster during exercise?

Back

To spread oxygen throughout your body more quickly.

Front

What is the pulmonary vein?

Back

The pulmonary vein carries oxygenated blood from the lungs back to the heart.