Respiratory System Quiz

What is the function of the tiny hair present in your nostrils?

• To obstruct dust particles

• To produce mucus

• To absorb oxygen

• To filter carbon dioxide

Which organ separates the chest cavity from the abdominal cavity?

• Stomach

• Kidney

• Diaphragm

• Liver

How many lobes does the right lung have?

• One

• Two

• Three

• Four

What is the function of the mucus in the bronchi?

• To produce carbon dioxide

• To absorb oxygen

• To collect germs and other particles

• To filter air

Where does the exchange of oxygen and carbon dioxide happen?

• Bronchi

• Nostrils

• Trachea

• Alveoli

What is the function of the alveoli?

• To produce mucus

• To filter air

• To absorb dust particles

• To exchange oxygen and carbon dioxide

What is the main reason why a person breathes?

• To filter air

• To exchange oxygen and carbon dioxide

• To absorb nitrogen

• To get rid of carbon dioxide

What is the approximate number of times a person breathes in one day?

• 25,000 times

• 20,000 times

• 15,000 times

• 10,000 times

Which muscle contracts when you breathe in and expands when you breathe out?

• Biceps

• Triceps

• Diaphragm

• Quadriceps

What is the unique characteristic of the lungs?

• They can produce oxygen

• They can float on water

• They can absorb carbon dioxide

• They can filter air