Free help with homework

Why join Brainly?

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


When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, into which your lungs expand, which in turn, the CO2 (Carbon Dioxide) exits the body via exhalation and the remaining O (Oxygen) goes to the heart, into the blood, and distributed throughout the body organs.
0 0 0
Ohh thank you very much ambitious.
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