Map of the Human Heart ... (shown in blue) flows from the body into the right atrium. ... The left ventricle pumps the oxygen-rich blood to all parts of the body.

The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is ...

Learn How the Heart Works. Your heart is an amazing organ. It continuously pumps oxygen and nutrient-rich blood throughout your body to sustain life. This fist-sized powerhouse beats (expands and ...

The left atrium is one of the four chambers of the heart, located on the left posterior side. Its primary roles are to act as a holding chamber for blood returning from the lungs and to act as a ...

Learn about the anatomy of the heart and how its chambers, valves, and vessels work together to maintain effective blood circulation throughout the body to sustain life.

The heart has upper chambers -- the atrium -- and bottom chambers -- the ventricles. And, the different types of arrhythmias can originate in one of those different chambers. So when an arrhythmia ...

Part of the heart’s electrical conduction system, ... Left atrium: This chamber takes in oxygen-rich blood from the lungs and sends it to the left ventricle when it contracts.

Map of the Human Heart ... Blood flows through the left atrium into the left ventricle. The left ventricle pumps the oxygen-rich blood to all parts of the body. amazing heart facts.

The right atrium is one of the four chambers of the heart. The heart is comprised of two atria and two ventricles. Blood enters the heart through the two atria and exits through the two ventricles.