How the Heart Beats · Heart
The gentle top-up before the main squeeze.
The upper chambers go first. Your atria give a gentle squeeze, easing the last of the blood down into the ventricles.
There's more: the gentle top-up before the main squeeze. 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