What you can feel when put your hand to your chest?
heartbeat
What is the organ?
heart
What is the organ?
Lungs
After running, your heartbeat is faster or slower?
Faster
What carries air to the lungs?
windpipe
when do you feel not ease to breath?
Flu
what do you inhale and exhale?
Nose
When you inhale your lungs are bigger or smaller?
Bigger
where does the blood travel?
Blood vessels