What keeps mucus and dirt out of your lungs?

• Your diaphragm
• Your medula
• Your heart
• Cilia

Alveoli has a mesh covering made of what?

• Cartilage
• Blood Vessles
• Bronchi
• Blue Alveoli

What is the entrance to the lungs called? 

• Lungs
• Bronchi
• Trachea

The trachea leads to the...

• Bronchioles
• Bronchi
• Esophagus
• Pulmonary Vessel

Oxygen from the air enters the blood stream at what location?

• Cardiac Notch
• Pulmonary Vein
• Alveoli
• Paranasal Sinuses

Inhale!!!
My lungs ________

• Got Smaller
• Got Bigger

EXHALE!!!
My lungs are __________________ air. 

• Taking in
• Letting out

EXHALE!!
My lungs are getting _______________

• smaller
• bigger

Where is the bronchi?

• A
• B
• C
• D

What does the lung send to blood cells

• Oxygen
• Nitrogen
• Carbon Dioxide