1. The ________ is a muscle
that helps you breath.
A. elbow
B. toe
C. diaphrag
D. liver
2. You inhale ________ and
exhale ________.
A. oxygen, carbon dioxide
B. nitrogen, nitrogen
C. carbon dioxide, oxygen
D. helium, nitrogen
3. Your ________ gets air
ready for your lungs.
A. heart
B. nose
C. saliva
D. diaphragm
4. ________ are tiny pouches.
A. Noses
B. Lungs
C. Plastic bags
D. Air sacs
5. Air comes into your body
when you ________.
A. exhale
B. inhale
C. bronchial
D. eat