Search results for: 'heart's right atrium'

Watch Later 1:18

By: Administrator, Views: 9719

Circulation of blood through the chambers of the heart Septum divides heart into the right and left heart. Each side contains an upper and lower chamber: Atria, or upper chambers, receive blood. Ventricles, or lower chambers, pump blood. Valves control intake and outflow of blood in chamber...

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Electrical Conduction System of the Heart

By: HWC, Views: 5657

Your heart is a muscle that works continuously, much like a pump. Each beat of your heart is set in motion by an electrical signal from within your heart muscle. The electrical activity is recorded by an electrocardiogram. known as an EKG or ECG. Each beat of your heart begins with an electric...

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Blood Flow through the Human Heart

By: HWC, Views: 6418

The heart is the pump of the human circulatory system. The left side of the heart has two connected chambers, the left atrium and the left ventricle. The right side of the heart also has two connected chambers, the right atrium and the right ventricle. These two sides, or pumps, of the heart are ...

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Electrocardiogram Examination

By: Administrator, Views: 9505

An electrocardiogram (ECG or EKG) is a test that checks how your heart is functioning by measuring the electrical activity of the heart. With each heartbeat, an electrical impulse (or wave) travels through your heart. This wave causes the muscle to squeeze and pump blood from the heart. Sinoat...

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Cardiac Cycle (Part 2 of 4)

By: Administrator, Views: 9685

Prior to atrial systole, blood has been flowing passively from the atrium into the ventricle through the open AV valve. During atrial systole the atrium contracts and tops off the volume in the ventricle with only a small amount of blood. Atrial contraction is complete before the ventricle begins...

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Cardiac Cycle (Part 1 of 4)

By: Administrator, Views: 9640

Blood Flow through the atrium.

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Introduction to Heart Attacks

By: Administrator, Views: 9853

A heart attack occurs when an artery supplying your heart with blood and oxygen becomes blocked. Fatty deposits build up over time, forming plaques in your heart's arteries. If a plaque ruptures, a blood clot can form and block your arteries, causing a heart attack.

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Coronary Heart Disease

By: Administrator, Views: 9815

Coronary heart disease accounted for 23.5 percent of all deaths in the U.S. in 2008. According to the Centers for Disease Control and Prevention (CDC), about 735,000 Americans have a heart attack each year. Warning signs and symptoms include chest pain or discomfort and shortness of breath. Ex...

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Virtual Tour of the Heart

By: Administrator, Views: 9506

Everything you need to know about your heart

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