Explore human body

Follow the parts. Change a control. See how a whole system responds.

These explanations connect an observable change with the mechanism behind it. Each includes an interactive model, a written walkthrough, source references and the assumptions that limit the demonstration.

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How does the human ankle move? Joints, tendons and ligaments

What we casually call the ankle is a team of joints. The joint above the talus mainly lets the foot point up and down. Below it, the subtalar joint helps the foot tilt. Explore the two movements separately.

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