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Which of the following Soviet leaders acted to end the Cold War in the most peaceful and significant way?
Heart Skeleton
A framework of dense connective tissue in the heart that provides structural support and attachment for cardiac muscle and valves.
Ectopic Stimuli
Electrical or chemical signals occurring at an abnormal location or time in the body, often resulting in irregular physiological responses such as ectopic heartbeats.
Atria
The two upper chambers of the heart that receive blood returning to the heart from the body and lungs.
Heart Valves
Structures within the heart that maintain unidirectional blood flow through the heart chambers, including the mitral, tricuspid, aortic, and pulmonary valves.
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