Exchange of Oxygen and Carbon Dioxide in the lungs

.Exchange of oxygen and carbon dioxide take place in the alveoli

.alveoli's are surrounded by capillaries

.when you inhale oxygen moves from the alveoli to to the capillaries into the bloodstream

.at the same time carbon dioxide moves from the bloodstream to the capillaries into the alveoli

.carbon dioxide is removed from the lungs when you exhale