Respiratory System Quiz

Which of the following is NOT a part of the respiratory system?

• Liver

• Pharynx

• Nasal cavity

• Trachea

What is the primary function of the alveoli?

• To produce sound

• To exchange gases

• To moisten air

• To filter dust

What is the role of the diaphragm during inspiration?

• To produce mucus

• To increase air pressure in the lungs

• To decrease air pressure in the lungs

• To close the airway

Which organ is also known as the voice box?

• Larynx

• Trachea

• Bronchi

• Pharynx

What happens to the breathing rate during physical activity?

• It decreases

• It remains the same

• It increases

• It stops

What is the function of the nasal cavity?

• To produce sound

• To warm and filter air

• To exchange gases

• To increase air pressure

What is the main air pipe that brings air to the lungs?

• Trachea

• Bronchi

• Pharynx

• Alveoli

What is the relationship between the respiratory and circulatory systems?

• They compete for oxygen

• They are the same system

• They are unrelated

• They work together for gas exchange

What is the role of the epiglottis?

• To moisten air

• To increase air pressure

• To close off the airway when swallowing

• To produce sound

What keeps the trachea, bronchi, and bronchioles open?

• Cartilage

• Muscles

• Blood vessels

• Mucus