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@tiekkz: Ақ жаулықты әже автобус тізгіндеп, көпшілікті таңғалдырды. Желі қолданушылары оның батылдығы мен шеберлігіне тәнті болды. #әже #ақжаулықтыәжелер #автобус

Tiek ақпарат порталы
Tiek ақпарат порталы
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Region: KZ
Tuesday 24 March 2026 06:30:46 GMT
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sembaiabai2007.com
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біздің Ақтөбенікіғой💪🏻😎❤️
2026-03-24 08:06:20
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Heart = double pump with two circulations working in sequence (pulmonary then systemic). Deoxygenated blood goes to lungs; oxygenated blood returns to supply the body. Chambers work as pairs: atria = receiving chambers, ventricles = pumping chambers. Atria fill first, then ventricles eject blood forward. Flow pathway (one-way): SVC/IVC → Right atrium → Tricuspid valve → Right ventricle → Pulmonary valve → Pulmonary artery. Then: Pulmonary veins → Left atrium → Mitral valve → Left ventricle → Aortic valve → Aorta. Valves prevent backflow and keep direction of blood movement correct. AV valves (tricuspid, mitral) act during ventricular systole; semilunar valves (pulmonary, aortic) open during ejection. AV valves are protected by chordae tendineae and papillary muscles. This prevents valve cusps from flipping into the atria during ventricular contraction. Septum prevents mixing: interatrial septum separates atria; interventricular septum separates ventricles. Normal circulation keeps oxygenated and deoxygen
Heart = double pump with two circulations working in sequence (pulmonary then systemic). Deoxygenated blood goes to lungs; oxygenated blood returns to supply the body. Chambers work as pairs: atria = receiving chambers, ventricles = pumping chambers. Atria fill first, then ventricles eject blood forward. Flow pathway (one-way): SVC/IVC → Right atrium → Tricuspid valve → Right ventricle → Pulmonary valve → Pulmonary artery. Then: Pulmonary veins → Left atrium → Mitral valve → Left ventricle → Aortic valve → Aorta. Valves prevent backflow and keep direction of blood movement correct. AV valves (tricuspid, mitral) act during ventricular systole; semilunar valves (pulmonary, aortic) open during ejection. AV valves are protected by chordae tendineae and papillary muscles. This prevents valve cusps from flipping into the atria during ventricular contraction. Septum prevents mixing: interatrial septum separates atria; interventricular septum separates ventricles. Normal circulation keeps oxygenated and deoxygen

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