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Explore Open, Close, Repeat | How Your Heart Valves Control Life 💓 with 377,185 views, 0 likes, and 8 comments. Experience the impact of this video content that has captured audience attention.

Your heart does not empty completely with every beat. 🔬 The left ventricular ejection fraction, or LVEF, measures how much blood the left ventricle pumps out during contraction. For example, an LVEF of 64% means the left ventricle ejects 64% of the blood volume it contains at the end of filling, while about 36% remains inside before the next heartbeat refills it. A value of 64% is within the usual normal range. Blood then follows a precise route through the heart. Oxygen-poor blood returns from the upper and lower body to the right atrium, passes into the right ventricle, and is pumped to the lungs. After receiving oxygen in the lungs, blood returns to the left atrium, moves into the left ventricle, and is pumped through the aorta to supply the body. In this animation, blue represents oxygen-poor blood and red represents oxygen-rich blood. This is a visual guide only—real oxygen-poor blood is dark red, not blue. Scientific note: Ejection fraction refers specifically to the proportion of blood ejected from the left ventricle during systole; it does not mean the heart should become empty after every beat. A typical normal left-ventricular ejection fraction is about 55%–70%. ────────── Professional medical education content. This video is carefully prepared to present anatomy, physiology, and healthcare topics in a scientific, respectful, and viewer-friendly format for public health awareness. ────────── 🎥 Video created by 🩺 @DrBahaaDmour ⚡ CEO & Founder of Smart Doctor ────────── #HeartValves #CardiacAnatomy #HumanHeart #Anatomy #MedicalAnimation #3DAnatomy #Cardiology #HeartAnatomy #BloodFlow #CirculatorySystem #Smartdoctor1 #DrBahaaDmour #Anatomy #Heart #HumanBody #3D_Anatomy #Anatomía #Anatomi #Anatomia #Education #Medicina #Doctor

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