World of Biology on Instagram: "Blood Donation Guide - This animation clearly show how blood type compatibility works. The chart highlights who can donate to whom, and who can safely receive blood. It’s important to know this information, as it can save lives in emergencies and ensure safe transfusions. • • Video credit 📸- Thanks to @thebrainmaze for this amazing Animation 👏 . Follow for more ❤️"

This video explains heart palpitations, their causes, and natural science-based ways to manage them, including hydration, electrolytes, stress reduction, herbs, and lifestyle changes. Educational | Evidence-based | Heart health #HeartPalpitations #HeartHealth #AnxietyRelief #NaturalHealing #DrNiwat @🌿NIWAT SCIENTIFIC HOSPITAL🌿 @Dr Nimoh English Niwat sci hos @Adwoalilybet

Here's exactly what happens every time your heart beats 🫀 It starts with an electrical signal from the SA node — your heart's natural pacemaker. That signal tells your atria to contract, pushing blood down into the ventricles. Then the ventricles contract (ventricular systole): 🫀 Right ventricle → pumps deoxygenated blood to the lungs 🫀 Left ventricle → pumps oxygen-rich blood to the rest of your body After that, the heart enters diastole — a brief relaxation where the chambers refill and pre