Respiratory System

Front

What happens when the diaphragm contracts?

Back

The volume of the thoracic cavity increases and the pressure decreases, causing air to rush into the lungs.

Front

What is the role of surfactant in the lungs?

Back

Surfactant decreases the surface tension of fluid in the alveoli.

Front

What process allows oxygen to move from the alveoli to the blood?

Back

Diffusion.

Front

What body function is facilitated by the fibrous bands stretched across the larynx?

Back

Speech.

Front

True or False: Each lung is contained within the thoracic cavity and surrounded by the pleura.

Back

True.

Front

What is the primary function of the respiratory system?

Back

To facilitate gas exchange, primarily oxygen and carbon dioxide.

Front

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

Back

Alveoli are the sites of gas exchange between the air and the blood.

Front

What is the significance of the pleura in the respiratory system?

Back

The pleura provides a lubricated surface for the lungs to expand and contract during breathing.

Front

What is the role of the larynx in the respiratory system?

Back

The larynx is involved in breathing, producing sound, and protecting the trachea against food aspiration.

Front

What is the difference between inhalation and exhalation?

Back

Inhalation is the process of taking air into the lungs, while exhalation is the process of expelling air from the lungs.