Bio Unit 5: 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 diffusion in the context of the respiratory system?

Back

The process by which oxygen moves from an area of high concentration in the alveoli to an area of low concentration in the blood.

Front

What is the role of the epiglottis?

Back

A flap of tissue that closes over the trachea during swallowing to prevent food from entering the airway.

Front

What are cilia and their function in the respiratory system?

Back

Tiny hair-like structures that sweep dust and bacteria out of the respiratory system.

Front

What happens to the diaphragm during inhalation?

Back

The diaphragm contracts and moves downward, increasing the volume of the thoracic cavity.

Front

What is the relationship between the volume of the rib cage and pressure during exhalation?

Back

As the volume of the rib cage decreases, the pressure increases, causing air to be expelled from the lungs.

Front

What gases are primarily exchanged in the alveoli?

Back

Oxygen moves into the blood, and carbon dioxide moves out of the blood.

Front

What is the function of mucus in the respiratory system?

Back

To trap dust, bacteria, and other particles, preventing them from entering the lungs.

Front

What is the trachea and its role in the respiratory system?

Back

A tube that connects the larynx to the bronchi, allowing air to pass to and from the lungs.

Front

How does the respiratory system contribute to homeostasis?

Back

By regulating the levels of oxygen and carbon dioxide in the blood.