Understanding the Respiratory System

What is the primary function of the nasal cavity in the respiratory system?

• To produce sound

• To filter, warm, and humidify the air we breathe

• To exchange gases between the bloodstream and the lungs

• To protect the lungs from food particles

Which structure acts as a flap to prevent food from entering the trachea during swallowing?

• Pharynx

• Larynx

• Epiglottis

• Bronchus

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

• To produce mucus

• To serve as a passageway for both air and food

• To exchange oxygen and carbon dioxide

• To filter dust and pathogens

Which part of the respiratory system is commonly known as the voice box?

• Trachea

• Bronchioles

• Larynx

• Nasal cavity

What is the main function of the trachea?

• To produce sound

• To transport air to the bronchi

• To exchange gases with the bloodstream

• To filter and humidify air

Which structure branches off from the trachea and leads into the lungs?

• Bronchioles

• Larynx

• Bronchus

• Epiglottis

What is the primary function of the bronchioles in the respiratory system?

• To exchange gases with the bloodstream

• To transport air to the alveoli

• To produce mucus

• To filter dust and pathogens

Which of the following structures is responsible for the exchange of gases in the respiratory system?

• Nasal cavity

• Bronchioles

• Alveoli

• Epiglottis

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

• To filter and humidify air

• To produce sound

• To exchange gases with the bloodstream

• To transport air to the bronchi

Which part of the respiratory system is lined with cilia to help trap and expel foreign particles?

• Trachea

• Pharynx

• Larynx

• Bronchus