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

The Surprising Mechanism Behind Airplane Oxygen Masks! 🤔✈️ #airplanemechanism #oxygen

“Gas Welding Made Easy” #OxyAcetyleneTorch, #MetalCutting, #CalciumCarbide, #sciencefacts

​How to Install an O2 Sensor Spacer Adapter

This Water Was Made With Lightning

The Kapalbhati Mistake You Are Making (Science of Breath) #kapalbhati #pranayama

How Does a Baby Breathe Inside the Womb? #BabyFacts #ScienceFacts #BiologyFacts