the cardiovascular system

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Updated Dec 2025

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powerpoint presentation heart and blood 1. the cardiovascular system: anatomy, function, and circulation 2. understanding blood: composition, types, and vital roles 3. heart health: diseases, prevention, and future directions plan: the heart: anatomy, function, and cardiac cycle the sinoatrial (sa) node, the heart's natural pacemaker, initiates each cardiac cycle by generating electrical impulses roughly 60-100 times per minute, setting the rhythm for atrial and ventricular contractions. the heart's four chambers, two atria and two ventricles, work in a coordinated fashion. atrial systole contributes only 20-30% to ventricular filling, with passive filling making up the majority during diastole. blood composition, types, and clotting mechanisms blood comprises roughly 55% plasma, containing water, electrolytes, and proteins like albumin; about 45% consists of cells, primarily red blood cells carrying oxygen via hemoglobin, crucial for tissues' cellular respiration. abo blood types are determined by the presence or absence of a and b antigens on red …

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oximately 50%, promoting heart failure. diagnosis and treatment of heart conditions cardiac catheterization, an invasive diagnostic, uses dye and x-rays to visualize coronary arteries, pinpointing blockages with over 70% stenosis requiring intervention. percutaneous coronary intervention (pci), like angioplasty, uses a catheter to insert a stent, opening blocked arteries, aiming for timi 3 flow restoration and improved perfusion. prevention and lifestyle: promoting heart health aim for at least 150 minutes per week of moderate-intensity aerobic exercise, like brisk walking, or 75 minutes of vigorous-intensity activity to strengthen the cardiovascular system and reduce heart disease risks. following a heart-healthy diet rich in fruits, vegetables, and whole grains, while limiting saturated fats, trans fats, cholesterol, and sodium, can significantly lower your ldl cholesterol by 10-20%. advances in cardiology: research, technology, and the future crispr-cas9 gene editing offers potential for correcting inherited cardiovascular conditions. clinical trials are underway, targeting mutations causing hypertrophic cardiomyopathy and …

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powerpoint presentation heart and blood 1. the cardiovascular system: anatomy, function, and circulation 2. understanding blood: composition, types, and vital roles 3. heart health: diseases, prevention, and future directions plan: the heart: anatomy, function, and cardiac cycle the sinoatrial (sa) node, the heart's natural pacemaker, initiates each cardiac cycle by generating electrical impulses roughly 60-100 times per minute, setting the rhythm for atrial and ventricular contractions. the heart's four chambers, two atria and two ventricles, work in a coordinated fashion. atrial systole contributes only 20-30% to ventricular filling, with passive filling making up the majority during diastole. blood composition, types, and clotting mechanisms blood comprises roughly 55% plasma, containin...

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