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What Keeps Blood Moving Forward? 🫀 | Heart Valves @ ────────── What keeps blood flowing in the right direction with every heartbeat? 🫀 The answer lies in four remarkable heart valves working together as a one-way system. The human heart contains four valves: the tricuspid, pulmonary, mitral, and aortic valves. Each plays a vital role in maintaining efficient blood circulation and preventing significant backward blood flow. 🔬 HOW THE FOUR HEART VALVES WORK 🔹 Tricuspid Valve Located between th
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PM2.5 levels soared as high as 3,340 in Palangkaraya, the capital of Indonesia's Central Kalimantan province, at 1pm on Wednesday (Oct 14), as thick orange haze continued to blanket the region. Forest fires have continued to burn across the province, with worsening air quality linked to a spike in respiratory illnesses. The haze has also affected neighbouring Singapore and Malaysia, forcing schools to close in several states in the latter. #haze #indonesia
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