Respiratory System Quiz

What is the primary function of the respiratory system?

• To digest food

• To take in oxygen and remove carbon dioxide

• To circulate blood

• To produce hormones

What is carbon dioxide in the context of the respiratory system?

• A nutrient

• A metabolic waste product

• A type of protein

• A vitamin

What are the two openings through which air enters the nose called?

• Nasal cavities

• Vocal cords

• Nostrils

• Pharynx

What is the function of cilia in the nose?

• To produce sound

• To trap pathogens and filter air

• To open and close the larynx

• To carry air to the bronchi

What is the larynx also known as?

• Windpipe

• Throat

• Voice box

• Nasal cavity

What does the epiglottis do?

• It vibrates the vocal cords

• It opens and closes the larynx during swallowing

• It filters air in the nose

• It carries air to the bronchi

What is the trachea also known as?

• Voice box

• Windpipe

• Nasal cavity

• Pharynx

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

• Exchange of O2 and CO2

• Carry air from the trachea to the lungs

• Pump blood to the heart

• Filter dust from the air

Where does the exchange of O2 and CO2 occur in the lungs?

• Bronchi

• Trachea

• Alveoli

• Diaphragm

What is the term for the body's act of controlled breathing?

• Inspiration

• Respiration

• Expiration

• Ventilation