Gas Exchange Flashcards
1
Q
What happens when we breathe?
A
When you breathe you take in oxygen and give out carbon dioxide since it’s useless to function the human body. This is called gas exchange.
2
Q
Why do we breathe in and out?
A
Breathing is the movement of air in and out of the lungs. When we breathe in we inhale to take in oxygen. The oxygen is used in respiration to transfer energy. Respiration produces carbon dioxide, which needs to be removed from the body. When we breathe out we exhale to remove carbon dioxide.
