Respiratory System Quiz

What does the respiratory system allow us to do?

• Digest food

• Exchange gases in the air

• Circulate blood

• Absorb nutrients

Which gas do we take in during respiration?

• Carbon dioxide

• Nitrogen

• Oxygen

• Helium

What is a necessary substance for our cells to get energy?

• Carbon dioxide

• Oxygen

• Nitrogen

• Hydrogen

What happens when the diaphragm relaxes?

• Inhalation occurs

• Expiration occurs

• Heart rate increases

• Blood pressure rises

What gas is taken into the lungs during respiration?

• Carbon dioxide

• Nitrogen

• Oxygen

• Helium

What is the process of breathing out called?

• Inhalation

• Expiration

• Circulation

• Digestion

Which part of the respiratory system is rich in blood vessels?

• Trachea

• Bronchial tubes

• Alveoli

• Diaphragm

What is the pathway of air as it enters the body?

• Nose, trachea, bronchial tubes, alveoli

• Mouth, esophagus, stomach, intestines

• Nose, lungs, heart, blood vessels

• Mouth, trachea, diaphragm, lungs

What is the diaphragm described as in the text?

• A round muscle

• A flat muscle

• A long muscle

• A thick muscle

What is the role of mucus in the respiratory system?

• To digest food

• To trap germs and dust

• To produce oxygen

• To circulate blood