In the time it took you to read the first three words of this message, your heart has already completed a full circuit — pumping blood to your lungs for oxygen, then out to your entire body, and back again. ❤️ This double loop — the pulmonary circuit and the systemic circuit — is one of the greatest engineering achievements in the living world. And when it breaks down, the results are devastating: stroke, hypertension, sickle-cell anaemia. Avinto is ready to map it all in Subtopic 5.6: Blood Circulation. 🌊 Type START now!
25/05/2026, 17:41:12
