Front

What are alveoli?

Back

Alveoli are tiny air sacs in the lungs where gas exchange occurs. They allow oxygen to enter the blood and carbon dioxide to be expelled.

Front

What dual functions does the pharynx serve?

Back

The pharynx serves both respiratory and digestive functions, acting as a passageway for air to the larynx and food to the esophagus.

Front

How do vocal cords produce sound?

Back

Vocal cords produce sound by vibrating as air is expelled from the lungs.

Front

What is the primary function of the larynx?

Back

The primary function of the larynx is speech production, as it houses the vocal cords.

Front

What is the role of bronchi in the respiratory system?

Back

Bronchi are the main passageways that conduct air into the lungs, branching into smaller bronchioles.

Front

What is surfactant and its function?

Back

Surfactant is a substance that reduces surface tension in the alveoli, preventing their collapse and aiding in gas exchange.

Front

What is the trachea's role in the respiratory system?

Back

The trachea, or windpipe, conducts air from the larynx to the bronchi and into the lungs.

Front

What is the significance of gas exchange in the alveoli?

Back

Gas exchange in the alveoli is crucial for oxygenating blood and removing carbon dioxide, which is vital for cellular respiration.

Front

What is the difference between bronchi and bronchioles?

Back

Bronchi are larger air passages that branch from the trachea, while bronchioles are smaller branches that lead to the alveoli.

Front

What is the function of the diaphragm in respiration?

Back

The diaphragm is a muscle that contracts and relaxes to facilitate breathing by changing the pressure in the thoracic cavity.