The Four Valves · Heart
Forward, always forward — that's the whole design.
Your heart moves blood in one direction only — forward through the same repeating path, never backward.
There's more: forward, always forward — that's the whole design. The full explanation — and the interactive version you can tap and quiz yourself on — lives in the app.
Body Atlas is an educational product. It does not provide diagnosis, treatment, or personal medical advice. · Privacy