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How the Heart Works - What the Heart Looks Like | NHLBI, NIH
Your heartbeat is the contraction of your heart to pump blood to your lungs and the rest of your body. Your heart's electrical system determines how fast your heart beats.
How the Heart Works - How the Heart Beats | NHLBI, NIH
The heart is an organ about the size of your fist that pumps blood through your body. It is made up of multiple layers of tissue. Your heart is at the center of your circulatory system. This system is a network of blood vessels, such as arteries, veins, and capillaries, that carries blood to and from all areas of your body. Your blood carries the oxygen and nutrients that your organs need to ...
Heart and vascular, or cardiovascular, diseases include conditions such as arrhythmias, coronary heart disease, heart attack, high blood pressure, congenital heart defects, vascular dementia, and stroke. The National Heart, Lung, and Blood Institute (NHLBI) supports research on the causes, diagnosis, treatment, and prevention of heart and vascular diseases, and the interplay of these diseases ...
Heart health is the overall well-being of your heart. Heart-healthy living involves understanding your risk factors, making healthy choices, and taking steps to reduce your chances of getting heart disease. Heart disease is a catchall phrase for a variety of conditions that affect the heart’s structure and function.