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Cardiovascular System (Anatomy of the heart (Ventricles- discharging…
Cardiovascular System
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Cardiovascular diseases
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Myocardial infarction
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Symptoms: chest pain, pain down left arm, or shortness of breath
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Cardiac cycle and ECG
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Cardiac cycle-The cardiac cycle is the performance of the human heart from the ending of one heartbeat to the beginning of the next. (consists of two periods)
1) one during which the heart muscle relaxes and refills with blood, called diastole
2) followed by a period of robust contraction and pumping of blood, dubbed systole.