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Install Free Gold Price Widget!
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- How the Heart Works - What the Heart Looks Like - NHLBI, NIH
Your heart is in the center of your chest, near your lungs It has four hollow chambers surrounded by muscle and other heart tissue The chambers are separated by heart valves, which make sure that the blood keeps flowing in the right direction Read more about heart valves and how they help blood flow through the heart
- Heart disease - Symptoms and causes - Mayo Clinic
Heart disease symptoms caused by heart valve disease The heart has four valves The valves open and close to move blood through the heart Many things can damage the heart valves If a heart valve is narrowed, it's called stenosis If a heart valve lets blood flow backward, it's called regurgitation
- How the Heart Works - NHLBI, NIH
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 work properly
- How the Heart Works - How Blood Flows through the Heart - NHLBI, NIH
Oxygen-poor blood from the body enters your heart through two large veins called the superior and inferior vena cava The blood enters the heart's right atrium and is pumped to your right ventricle, which in turn pumps the blood to your lungs The pulmonary artery then carries the oxygen-poor blood from your heart to the lungs
- How the Heart Works - How the Heart Beats - NHLBI, NIH
At rest, a heart rate of 60 to 100 beats per minute is normal When you exercise, your heart beats faster, and your heart rate speeds up to get more oxygen to your muscles Signals from your body’s nervous system and Hormone from your endocrine system control how fast and hard your heart beats
- Heart and Vascular Diseases - NHLBI, NIH
Heart disease is still the leading cause of death for men and women The NHLBI has a long history of groundbreaking research in treatments for high blood pressure, a common condition that increases the risk for heart disease and stroke, two of the leading causes of death for Americans
- Heart Failure - What Is Heart Failure? - NHLBI, NIH
Heart failure, also known as congestive heart failure, is a condition that develops when your heart doesn’t pump enough blood for your body’s needs This can happen if your heart can’t fill up with enough blood It can also happen when your heart is too weak to pump properly The term "heart failure" does not mean that your heart has stopped
- Heart disease - Diagnosis and treatment - Mayo Clinic
Heart CT scan, also called cardiac CT scan In a cardiac CT scan, you lie on a table inside a doughnut-shaped machine An X-ray tube inside the machine rotates around your body and collects images of your heart and chest Heart magnetic resonance imaging (MRI) scan
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