Download The Sound Of Your Heart [BEST]

We see and hear about hearts everywhere. A long time ago, people even thought that their emotions came from their hearts, maybe because the heart beats faster when a person is scared or excited. Now we know that emotions come from the brain, and in this case, the brain tells the heart to speed up. So what's the heart up to, then? How does it keep busy? What does it look like? Let's find out.

The heart is made up of four different blood-filled areas, and each of these areas is called a chamber. There are two chambers on each side of the heart. One chamber is on the top and one chamber is on the bottom.

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You probably guessed that the blood just doesn't slosh around your body once it leaves the heart. It moves through many tubes called arteries and veins, which together are called blood vessels. These blood vessels are attached to the heart.

When you go for a checkup, your doctor uses a stethoscope to listen carefully to your heart. A healthy heart makes a lub-dub sound with each beat. This sound comes from the valves shutting on the blood inside the heart.

The first sound (the lub) happens when the mitral and tricuspid valves close. The next sound (the dub) happens when the aortic and pulmonary valves close after the blood has been squeezed out of the heart. Next time you go to the doctor, ask if you can listen to the lub-dub, too.

Even though your heart is inside you, there is a cool way to know it's working from the outside. It's your pulse. You can find your pulse by lightly pressing on the skin anywhere there's a large artery running just beneath your skin. Two good places to find it are on the side of your neck and the inside of your wrist, just below the thumb.

You'll know that you've found your pulse when you can feel a small beat under your skin. Each beat is caused by the contraction (squeezing) of your heart. If you want to find out what your heart rate is, use a watch with a second hand and count how many beats you feel in 1 minute. When you are resting, you will probably feel between 70 and 100 beats per minute.

Some heart murmurs are a harmless type called innocent heart murmurs. They are common in children and do not require treatment or lifestyle changes. In most cases, innocent murmurs disappear when children reach adulthood.

Most people with a heart murmur do not have symptoms. Usually the murmur is found during a physical exam for other symptoms, such as chest pain, shortness of breath, fatigue, or the presence of a blue coloring to the skin or fingertips (called cyanosis).

In most cases, your doctor will be able to hear your heart murmur by using a stethoscope to listen to your heart (a technique called cardiac auscultation). Heart murmurs change as your body position or breathing changes, so you may be asked to stand up, squat, lie down, breathe deeply, or hold your breath while the doctor listens to your heart.

The treatment for a heart murmur depends on the cause. Innocent heart murmurs usually do not need to be treated. If your heart murmur is caused by an underlying condition, such as high blood pressure, your doctor will treat that condition. If your heart murmur is caused by disease of the valve itself (intrinsic valve disease) or other heart defects, medicines or surgery may be needed.

Doctors used to give anyone with a heart murmur antibiotic medicines before a dental or surgical procedure to prevent infection in your heart valves. (Some of these procedures may cause bacteria to enter the bloodstream, which can lead to infection.) Today, most doctors do not recommend routine antibiotics unless the murmur is caused by intrinsic valve disease. Talk to your doctor or dentist for current guidelines.

Your pulse is the rate your heart beats. It is also called your heart rate. To find your pulse without a heartrate monitor or watch, gently place your index and middle fingers on the artery located on the inner wrist of either arm, below your thumb. You should feel a pulsing or tapping against your fingers.

With each heartbeat, an electrical signal travels from the top of the heart to the bottom. As the signal travels, it causes the heart to contract and pump blood. The heartbeat process includes the following steps.

Heart murmurs are themselves often asymptomatic (have no symptoms). Commonly, they are innocent and are only detected during a routine medical examination.

Abnormal heart murmurs may be associated with various types of heart disease, particularly those affecting the heart valves. The presence of heart disease may be suggested by:

A heart murmur is usually innocent, and generally does not mean there is an abnormality. The murmur may be heard only because the vibration in the blood travelling through the heart is greater than usual, or the heart is closer to the front of the chest and the stethoscope. However, a heart murmur may also be caused by faulty blood flow within the heart. This can be triggered by a range of conditions including:

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Like any other muscle, the heart needs its own supply of oxygen-rich blood to function. The coronary arteries handle this job. Coronary artery disease is when the coronary arteries become narrowed or blocked so your heart does not get enough oxygen to do its job effectively.

On the right side of the heart, there is a right atrium and a right ventricle. The right side receives oxygen-poor blood from the rest of the body.

On the left side of the heart, there is a left atrium and a left ventricle. The left side receives oxygen-rich blood from the lungs.

The four chambers are separated by one-way valves that open and close with every heartbeat. There are four heart valves.

To pump blood throughout the body, your heart contracts then relaxes. This action is similar to clenching and unclenching your fist. With each beat of your heart, blood is pushed through your arteries. This is what creates your pulse.

Your heart rate is the number of times your heart beats per minute. Normal heart rate varies from person to person, but a normal adult resting heart rate is usually about 60 to 100 beats per minute. During rest, your heartbeat will slow down. With exercise, it will beat faster. Knowing your heart rate can help you spot health problems.

There is an electrical system inside your heart that controls the rate (speed) and rhythm of your heart. A normal heart rhythm is called normal sinus rhythm (NSR).

When there is a problem with your heart rhythm or rate, it is called arrhythmia.

An electrical system in the heart makes sure the heart beats in a regular rhythm and normal rate. It starts with an electrical signal in the right atrium, at the SA Node (sinoatrial node). The electrical signal then spreads throughout the heart from top to bottom (from atria to ventricles). As one part contracts, the others relax in a sequence.

There are four chambers of the heart: the right atrium, the right ventricle, the left atrium, and the left ventricle. The atrioventricular valves are located on the floor of the atria and empty into the ventricles. These valves are composed of leaflets attached to papillary muscles in the ventricle via thin cord-like structures called chordae tendineae. The leaflets also attach to a fibrous ring, known as the valve annulus, that supports the valve between the atria and ventricles. The tricuspid valve separates the right atrium from the right ventricle, and the mitral valve separates the left atrium from the left ventricle. The tricuspid valve consists of three leaflets, while the mitral valve consists of two leaflets.

A single layer of endothelial cells called the endocardium lines the surface of the heart valves. The subendocardium contains a vast population of cells types. It contains fibroblasts, myofibroblasts, smooth muscle cells, nerves, elastic and collagenous fibers. The connective tissue of the subendocardium is continuous with the connective tissue of the myocardial layer.[2]

The heart valves permit forward flow of blood while preventing backward regurgitant flow.[4] During systole, the tension provided by the chordae tendineae keep the atrioventricular valve leaflets together. The rise in pressure pushes the aortic and pulmonic valves open, allowing blood to flow forward. As the ventricle stops contracting and pressures fall in diastole, elastic recoil of the great arteries will cause blood to fall back toward the heart. The sinus-like leaflets will begin to fill with blood, which will distend the valve cusp toward one another for closure. Tension on the chordae tendineae also decreases. The atria fill with blood then contract, causing the atrioventricular valves to open so the ventricles can fill with blood.[5]

Heart sounds are primarily generated from vibrations of cardiac structures caused by changes that create turbulent flow.[6] Under normal conditions, blood flow is laminar. With structural or hemodynamic changes turbulent flow results, which causes vibrational waves. These waves are transmitted through the chest wall and are the sounds practitioners auscultate with their stethoscopes. The sound transmits in the same direction as the blood flow.[7] ff782bc1db