heart weighs between 7 and 15 ounces (200 to 425 grams) and is a little
larger than the size of your fist. By the end of a long life, a person's
heart may have beat (expanded and contracted) more than 3.5 billion times.
In fact, each day, the average heart beats 100,000 times, pumping about
2,000 gallons (7,571 liters) of blood.
Your heart is located between your lungs in the middle
of your chest, behind and slightly to the left of your breastbone
(sternum). Your heart has 4 chambers. The upper chambers are called the
left and right atria, and the lower chambers are called the left and right
ventricles. A wall of muscle called the septum separates the left and
right atria and the left and right ventricles. The left ventricle is the
largest and strongest chamber in your heart. The left ventricle's chamber
walls are only about a half-inch thick, but they have enough force to push
blood through the aortic valve and into your body.
Four types of valves regulate blood flow through your
- The tricuspid valve regulates blood flow between the
right atrium and right ventricle.
- The pulmonary valve controls blood flow from the
right ventricle into the pulmonary arteries, which carry blood to your
lungs to pick up oxygen.
- The mitral valve lets oxygen-rich blood from your
lungs pass from the left atrium into the left ventricle.
- The aortic valve opens the way for oxygen-rich blood
to pass from the left ventricle into the aorta, your body's largest
artery, where it is delivered to the rest of your body.
Electrical impulses from your heart muscle (the
myocardium) cause your heart to contract. This electrical signal begins in
the sinoatrial (SA) node, located at the top of the right atrium. The SA
node is sometimes called the heart's "natural pacemaker." An
electrical impulse from this natural pacemaker travels through the muscle
fibers of the atria and ventricles, causing them to contract. Although the
SA node sends electrical impulses at a certain rate, your heart rate may
still change depending on physical demands, stress, or hormonal factors.
Your heart and circulatory system make up your
cardiovascular system. Your heart works as a pump that pushes blood to the
organs, tissues, and cells of your body. Blood delivers oxygen and
nutrients to every cell and removes the carbon dioxide and waste products
made by those cells. Blood is carried from your heart to the rest of your
body through a complex network of arteries, arterioles, and capillaries.
Blood is returned to your heart through venules and veins. If all the
vessels of this network in your body were laid end-to-end, they would
extend for about 60,000 miles (more than 96,500 kilometers), which is far
enough to circle the earth more than twice!
|How the healthy heart works
|During the systole, the right ventricle pushes
deoxygenated blood through the pulmonic valve to the lungs. In the lungs a
transfer of gases occurs. The red blood cells release carbon dioxide
and pick up oxygen. The carbon dioxide is then exhaled.
|The reoxygenated blood returns to the left atrium.
From there it is then circulated to the body during systole by the left
ventricle, where it is available at all times for use by the body. The
used blood then returns to the right atrium for a return trip through the
|An electrical system stimulates the heart muscle by
initiating an electrical impulse, which is carried to all parts of the
heart muscle causing it to contract. Disruptions in this cycle range from
the simple annoying "skipped beats" to arrhythmias that often
accompany a heart attack.
|Diseases of the Cardiovascular System
|About 20% of the population is at high risk of coronary
heart disease. These patients can be identified by the major risk factors
in their lives, including obesity, cigarette smoking, high blood pressure,
high cholesterol, and diabetes. You can take active measures to promote a
healthy heart lifestyle and avoid being included in this group. Start by
learning about the risk factors for coronary heart disease and which of
them you can control. Modifying any of the risk factors can be very
beneficial in helping you maintain a healthy heart.
|Hardening of the arteries due to calcification associated
with cholesterol deposition in the wall of the arteries, Atherosclerosis
can occur not only in the heart but also throughout the body. It may be
localized at a restricted small segment of the artery, or diffuse, marked
by cholesterol buildup and narrowing along the entire length of an artery.
|What is Hypertension?
|High blood pressure, a major risk factor for heart
disease. Blood pressure is measured in millimeters of mercury (mmHg). The
threshold for hypertension is variously defined as 140 mmHg systolic and
90 mmHg diastolic to as high as 200 mmHg systolic and 110 mmHg diastolic.
In the Gould program, the target blood pressure is 120/80 mmHg or below.
|What is Coronary heart disease?
|Cardiovascular diseases include stroke, congestive heart
failure, hypertension, and other diseases, as well as coronary heart
disease. In the U.S., the number of deaths from coronary heart disease is
nearly as high as the number of deaths from all forms of cancer combined.
is specifically designed to support the
entire cardiovascular system, including the heart, arteries, and veins while
preventing damage to cardiac tissues caused by anoxia and myocardial ischemia
(lack of oxygen) and ischemia (lack of blood flow) to heart tissues. Cardiogin helps to dissolving arterial clots
and also works as a blood thinner which is more effective than any Antiplatelet
Agents such as aspirin or Anticoagulants. Also Cardiogin ingredients may prevent any additional clots and permits the
body’s natural clot-dissolving activity.
Niacin (from Inositol Hexanicotinate),
Polyphenols (from Red Wine-Grape Extract), Coenzyme
Policosanol, Resveratrol, Inositol (from Inositol Hexanicotinate), Octacosanol.