Respiratory System Review

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 the main structures of the respiratory system?

Back

Nose, pharynx, larynx, trachea, bronchi, bronchioles, alveoli.

Front

What is the role of the diaphragm in breathing?

Back

The diaphragm contracts to create a vacuum that pulls air into the lungs and relaxes to push air out.

Front

What are alveoli?

Back

Tiny air sacs in the lungs where gas exchange occurs.

Front

What is the epiglottis?

Back

A flap of cartilage that covers the larynx during swallowing to prevent food from entering the trachea.

Front

What happens during inhalation?

Back

The diaphragm contracts and the intercostal muscles contract, expanding the chest cavity and drawing air into the lungs.

Front

What happens during exhalation?

Back

The diaphragm relaxes and the intercostal muscles relax, causing the chest cavity to decrease in size and push air out of the lungs.

Front

What is the trachea?

Back

The windpipe that connects the larynx to the bronchi, allowing air to pass to and from the lungs.

Front

What is the function of the bronchi?

Back

To carry air from the trachea to the lungs and distribute it to the bronchioles.

Front

What is the role of the intercostal muscles?

Back

To assist in the expansion and contraction of the chest cavity during breathing.