The Human Heart Explained Structure Function And Beat Mechanics

Human Heart Anatomy Explained in 5 Minutes | Animated Heart Structure & Blood Flow

He Gave Away His Umbrella... Then Received the Biggest Surprise ❤️

The Behind The Scenes Clips of The Digital Circus Episode 9 look AMAZING

Trans rights are human rights 🏳️‍⚧️ Today, in a devastating decision, the US Supreme Court ruled 6-3 that states can exclude trans athletes from female sports. The ruling centered on the cases of Lindsay Hecox, a college student in Idaho, and Becky Pepper-Jackson, a teenage athlete from West Virginia. The impact stretches far beyond these two states. Idaho and West Virginia’s bans are already mirrored in at least 27 other states. The attacks against transgender people in sports, bathrooms, the

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