World of Biology on Instagram: "Part-1- What's inside the cell Animation credit 📸- @helixanimation #cell #dna #medical"

World of Biology on Instagram: "Blood circulation is the continuous movement of blood through the heart and blood vessels, delivering oxygen and nutrients to every cell while removing carbon dioxide and waste products. Powered by the heart’s pumping action, arteries carry oxygen-rich blood from the heart, and veins return oxygen-poor blood back. This vital system keeps your organs alive, your brain sharp, and your body energized 24/7. 🚀"