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- How the Heart Works - What the Heart Looks Like - NHLBI, NIH
Anatomy of the interior of the heart This image shows the four chambers of the heart and the direction that blood flows through the heart Oxygen-poor blood, shown in blue-purple, flows into the heart and is pumped out to the lungs Then oxygen-rich blood, shown in red, is pumped out to the rest of the body, with the help of the heart valves
- 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
- Heart disease - Symptoms and causes - Mayo Clinic
Heart failure This is one of the most common complications of heart disease The heart can't pump enough blood to meet the body's needs Heart attack A heart attack can happen if a piece of plaque in an artery or a blood clot moves to the heart Stroke The risk factors that lead to heart disease also can lead to an ischemic stroke
- 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 These signals and hormones allow you to adapt to
- 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
- 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
- Cardiovascular Medicine in Phoenix - Mayo Clinic
The cardiology and cardiovascular medicine team at Mayo Clinic in Phoenix Scottsdale, Arizona, is accelerating unprecedented advances in the practice and delivery of heart and vascular care Our more than 41 cardiologists specialize in minimally invasive heart surgery, heart valve disease, heart rhythm disorders, heart transplant and other
- Heart and Vascular Diseases - NHLBI, NIH
The Cardiothoracic Surgical Trials Network (CTSN) is an international clinical research enterprise that studies heart valve disease, arrhythmias, heart failure, coronary heart disease, and the complications of surgery The trials spans from early translation to the completion of six randomized clinical trials, three large observational studies
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