Imagine a network of pipes stretching over 100,000 kilometres through your body — enough to circle the Earth two and a half times. 🌍 These are your blood vessels: arteries carrying blood away from your heart under tremendous pressure, veins returning it quietly with the help of tiny valves, and capillaries so thin that cells must squeeze through them one by one. Every tissue in your body depends on this network for oxygen and nutrients. Avinto will guide you through Subtopic 5.2: Blood Vessels — their structure, function, and differences. 🔬 Type START to explore!
16/05/2026, 14:36:32
