Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions



This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
What happens when you inhale and exhale?

When you inhale the diaphragm muscles contract and move down. In the same time your ribs move up to make more space for the lungs. Air pushes into the lungs where air pressure is lower than outside them. 

When you exhale, everything is in the opposite. Diaphragm muscles relax and return to their original size. Ribs are also moving down. The chest cavity is also returning to its natural size. When you exhale the air pressure is higher inside the lungs than outside.
6 4 6
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts