Oxygen and carbon dioxide move into and out of the blood within the capillaries surrounding the alveoli. Which statement about this process is correct?
- AOxygen and carbon dioxide only pass through one cell layer to reach their destination.
- BOxygen moves out of the blood and carbon dioxide moves into the blood during gaseous exchange.
- COxygen rapidly diffuses into the alveoli and carbon dioxide rapidly diffuses out of the alveoli due to the large surface area of the alveoli.
- DThe capillaries have the lowest blood pressure in the body which allows the blood cells to remain in the alveolar capillaries to maximise gas exchange.