The lungs hold air that is taken in. Oxygen gas noticeable all around moves into the blood. The heart pumps to transports this oxygenated blood to cells in the body that need it to deliver vitality.
The lungs hold air that is breathed in.Oxygen gas in the air moves intothe blood. The heart pumps to transports this oxygenated bloodto cells in the body that need it toproduce energy.
