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Heart Disease- Understanding Heart Disease
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Cardiovascular Disease Statistics
Cardiovascular Disease Statistics Each year, heart disease is at the top of the list of the country's most serious health problems. In fact, statistics show that cardiovascular disease is America's leading health problem, and the leading cause of death. Consider the most recent statistics released by the American Heart Association: Approximately 82 million people in this country suffer from some form of cardiovascular disease, causing about 2,200 deaths a day, averaging one death every 39 seconds. Almos...
Anatomy and Function of the Coronary Arteries
Anatomy and Function of the Coronary Arteries Click Image to Enlarge Coronary arteries supply blood to the heart muscle. Like all other tissues in the body, the heart muscle needs oxygen-rich blood to function, and oxygen-depleted blood must be carried away. The coronary arteries consist of two main arteries: the right and left coronary arteries. The left coronary artery system branches into the circumflex artery and the left anterior descending artery. What are the different coronary arteries? The two ...
Anatomy and Function of the Heart Valves
Anatomy and Function of the Heart Valves Click Image to Enlarge What are heart valves? The heart consists of four chambers, two atria (upper chambers) and two ventricles (lower chambers). Blood passes through a valve before leaving each chamber of the heart. The valves prevent the backward flow of blood. Valves are actually flaps (leaflets) that act as one-way inlets for blood coming into a ventricle and one-way outlets for blood leaving a ventricle. Normal valves have three flaps (leaflets), except the...
Anatomy and Function of the Heart's Electrical System
Anatomy and Function of the Heart's Electrical System Click Image to Enlarge The heart's electrical system The heart is, in the simplest terms, a pump made up of muscle tissue. Like all pumps, the heart requires a source of energy and oxygen in order to function. The heart's pumping action is regulated by an electrical conduction system that coordinates the contraction of the various chambers of the heart. How does the heart beat? An electrical stimulus is generated by the sinus node (also called the si...
Basic Anatomy of the Heart
Basic Anatomy of the Heart Click Image to Enlarge About the heart The heart is the hardest working muscle in the human body. Located almost in the center of the chest, the adult human heart is about the size of one fist. At an average rate of 80 times a minute, the heart beats about 115,000 times in one day or 42 million times in a year. In a 70-year lifetime, an average human heart will beat more than 2.5 billion times. Even when a person is at rest, the heart continuously works hard. How the heart wor...
Anatomy and Function of the Heart Valves
Anatomy and Function of the Heart Valves Click Image to Enlarge What are heart valves? The heart consists of four chambers, two atria (upper chambers) and two ventricles (lower chambers). There is a valve through which blood passes before leaving each chamber of the heart. The valves prevent the backward flow of blood. These valves are actual flaps that are located on each end of the two ventricles (lower chambers of the heart). They act as one-way inlets of blood on one side of a ventricle and one-way ...
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SEARCH HEALTH LIBRARY
FIND A PHYSICIAN
WELLNESS LECTURES & EVENTS
CONTACT US
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Visit Us
2170 South Ave.
South Lake Tahoe, CA
96150
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