When you breathe in, your
lungs
...... like a balloon.
Help Box
circulatory system
respiratory system
digestive system
1.4 kg
206
mouth
inflate
Four
Nervous system
22 feet
Stapes, middle ear
Answers
Answered by
1
Answer:
When we breathe in, our lungs expand like a balloon.
Answered by
1
Expand
It is the respiratory system
It is the respiratory system
Similar questions