7.3 - Peak Performance

Question 1

What happens to the:
- intercostal muscles
- ribcage
- diaphragm
- pressure & volume

when you breathe in?

Answer 1

• intercostal muscles contract
• ribcages moves up & out
• diaphragm contracts
• pressure decreases & volume increase

Question 2

What happens to the:
- intercostal muscles
- ribcage
- diaphragm
- pressure & volume

when you breathe out?

Answer 2

• intercostal muscles relax
• ribcage moves down & in
• diaphragm relaxes
• pressure increases & volume decreases