@anatomyunseen1: Inside your heart are tiny structures called valves that control the direction of blood flow. They open and close with each heartbeat, making sure blood moves forward through the chambers without flowing backwards. It’s a perfectly timed system that keeps your circulation running smoothly. #heartvalves #humananatomy #medicallearning #scienceeducation #biologyexplained

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Monday 09 March 2026 15:29:11 GMT