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Extras

Video thumbnail: Human: The World Within Blood Vessels and Circulatory Movement

Human: The World Within

Blood Vessels and Circulatory Movement

Human bodies are designed to move in order to circulate blood and nutrients to every cell.

Blood Vessels and Circulatory Movement

Video thumbnail: Human: The World Within Episode 2 Preview | Pulse

Human: The World Within

Episode 2 Preview | Pulse

See the world beneath the human heartbeat that makes our craziest feats possible.

Episode 2 Preview | Pulse

Video thumbnail: Human: The World Within Functions of the Heart and Lungs

Human: The World Within

Functions of the Heart and Lungs

Our heart and lungs circulate oxygen throughout our blood vessels to keep cells alive.

Functions of the Heart and Lungs

Video thumbnail: Human: The World Within The Science Behind the Pulse in Our Bodies

Human: The World Within

The Science Behind the Pulse in Our Bodies

Human life depends on our bodies ability to process oxygen to keep our cells alive.

The Science Behind the Pulse in Our Bodies

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