What is the primary function of the structure labeled "Lungs" in the diagram?

• To pump blood throughout the body

• To filter waste from the blood

• To facilitate the exchange of oxygen and carbon dioxide

• To aid in the digestion of food

What is the role of the diaphragm in the respiratory system as shown in the diagram?

• It acts as a valve to control blood flow

• It releases hormones into the bloodstream

• It contracts and relaxes to help inflate and deflate the lungs

• It filters air before it enters the lungs

What is the name of the muscle that helps in the breathing process by moving up and down?

• Rib muscles

• Diaphragm

• Bronchus

• Windpipe

Which part of the lungs is directly connected to the windpipe?

• Air sacs

• Diaphragm

• Bronchus

• Rib muscles

What are the small airways inside the lungs that branch off from the bronchus called?

• Diaphragm

• Rib muscles

• Bronchioles

• Windpipe

Where does the gas exchange occur in the lungs?

• Bronchus

• Diaphragm

• Rib muscles

• Air sacs

What are the bronchi?

• Branches from the bronchi which lead to the air sacs

• Shields or protects the lungs from damage

• The 2 branches which join the windpipe to the lungs

• Allow oxygen to pass from the lungs into the blood & carbon dioxide to pass from the blood to the lungs

What is the role of the air sacs in the respiratory system?

• Inflates to take air into the body & deflates to remove air from body

• The 2 branches which join the windpipe to the lungs

• Allow oxygen to pass from the lungs into the blood & carbon dioxide to pass from the blood to the lungs

• Shields or protects the lungs from damage

Which structure protects the lungs from damage?

• Windpipe

• Bronchi

• Bronchioles

• Ribs

What happens to the chest cavity when the diaphragm contracts?

• The chest cavity reduces in size.

• The chest cavity enlarges.

• The chest cavity remains the same size.

• The chest cavity fills with fluid.