Breathing process

Question 1

Define inhalation

Answer 1

Breathing in

Question 2

Define exhalation

Answer 2

Breathing out=releasing co2

Question 3

State what happens when we inhale

Answer 3

• intercostal muscle contracts
• rib cage moves up and out
• diaphragm contracts and moves down
• volume in chest increases
• pressure decreases = air moves in

Question 4

State what happens when you breathe out

Answer 4

• Intercostal muscle relaxes
• ribcage moves down and in
• diaphragm relaxes and moves up
• volume in chest decreases
• pressure in chest increases= air moves out