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 is the role of the alveoli in the respiratory system?

Back

Alveoli are tiny air sacs in the lungs where gas exchange occurs; oxygen enters the blood and carbon dioxide is removed.

Front

Define diffusion in the context of the respiratory system.

Back

Diffusion is the process by which oxygen moves from an area of high concentration (alveoli) to an area of low concentration (blood capillaries).

Front

What is the pharynx and its function?

Back

The pharynx is a chamber behind the nose and mouth that serves as a pathway for air to enter the trachea.

Front

What is the trachea commonly known as?

Back

The trachea is commonly known as the windpipe.

Front

What are bronchi?

Back

Bronchi are the two main branches that the trachea divides into, directing air into each lung.

Front

What are bronchioles?

Back

Bronchioles are smaller branches of the bronchi that lead to the alveoli.

Front

Explain the role of the diaphragm in breathing.

Back

The diaphragm is a muscle that contracts and relaxes to change the volume of the thoracic cavity, facilitating inhalation and exhalation.

Front

What happens to the rib cage volume during inhalation?

Back

During inhalation, the volume of the rib cage increases, causing a decrease in pressure and allowing air to flow into the lungs.

Front

What is the function of the epiglottis?

Back

The epiglottis is a flap that covers the trachea during swallowing to prevent food from entering the airway.