Heart

the heart is affected by tobacco because tobacco is absorbed in to our blood and is dropped off in our lungs and eventually will cause us lung cancer or asthma or our lungs will fail and we will die!!!!!

4 meters

Depends on the blood pressure

I presume you mean, "Does caffeine speed up your heart rate?"

Then... idk look it up

It is more likely that a heart problem will cause polycythemia than the other way around.
But because polycythemia causes your blood to thicken and slows blood flow, it increases your risk of developing blood clots. If a blood clot occurs in your head, it can cause a stroke. If they reach the coronary arteries that feed the heart muscle, a heart attack will be the result.

Yes, it must be so in a healthy heart. The reason is very simple. The left and right ventricles pump in the same cycle (and, if this were not the case, there would be a backlog of fluid in one system or the other).

the heart

Heart diseases are not diseases they are conditions. The term heart disease is often used. This affects the cardiovascular system. You can get this by having a bad diet and not exercising and not smoking.

They are separated by the bicuspid valve (also known as the mitral valve).

yes! i have it worse i have not only that but also mitral valve prolapse mitral regurgitation.

There are four chambers of the heart and two major regions (the base and the apex).

The left ventricle pumps oxygenated blood round the body, whereas the right ventricle only needs to pump blood to the lungs. Therefore, the left ventricle needs to be more powerful and strong compared to the right, and this is why the ventricle walls differ in this way.

1) Superior and Inferior vena cava

2) Right Atrium

3) tricuspid valves

4) right ventricle

5)pulmonary semiluner

6) Pulmonary ateries

7) lungs

8pulmonary veins

9) left atrium

10) Bicuspid valves

11) left venticle

12)Aorta back to the body

I believe the vessel can explode (if having a heartattack and the vessels are under HUGE (and I mean huge) pressure), but I don't know if the actual heart can explode, but in my opinion I think it could because if the blood is trapped in the heart due to a vessel being blocked, and the pressure builds up, I guess it to could COLLAPSE.

Blood cells and a brain to control it . It's that simple .

When your blood come back into the heart, it comes in through the right side. The first valve opens, allowing the blood to pass from the right atrium to the right ventricle, where it is then pumped to the lungs. The blood receives oxygen and brings it to the left atrium. Then, it passes through the other valve, to the ventricle, and out through the aorta. The valves allow blood to flow through the heart and are also the two sounds that your heart make. The lub-dub noise is the sound of the two important valves closing shut.

Actually both right and left lungs but everything else is correct.

The sinoatrial node and the atrioventricular node controls the Cardiac Cycle- The Sinoatrial node is often called the Pace maker.

The sinoatrial node is located in the wall of the right atrium. The Sinoatrial node emits a wave of electrical activity which reaches both Atria which causes them to contract, the wave of electrical activity is prevented from reaching the ventricles by the atrioventricular septum.

Eventually the electrical activity will reach the Atrioventricular node which is situated between the atria.The Atrioventricular node conveys this along specialised muscle fibres called The Bundle of His.The bundle of his fibres release this electrical activity at the apex of the heart which causes both ventricles to contract at the same time.

Promoting health is the equivalent of preventative medicine. It includes eliminating factors in your daily life that cause illness such as overeating=obesity, poor diet, smoking, drug/alcohol abuse, and lack of exercise.

the heart will implode No it wont. the realy long term effects on your heart are as follows * cardiac hypertrophy (growth in the myocardium muscle that the heart is made from) * increased stroke volume (more blood pumped per beat) * lower resting blood preasure * increased cardiac output (blood pumped per min) * lower heart ratewhile resting and active * quicker recovery rate (heart returns to normal speed after exercise faster) * incrase in blood flow It also dramatically lowers the chance of getting coronary heart disease. Once your heart rate drops bellow 60bpm it is said to be more efficient, this state is called brandycardia.

From the right ventricle, the unoxygenated blood flows through the pulmonary artery and into the lungs where it is oxygenated. From the lungs the newly oxygenated bloos flows through the pulmonary vein to the left heart. From the left ventricle the blood flows through the aorta into general circulation.

These are the valves of the human heart.

The bicuspid (or mitral) valves each have two large flaps, curved to close the rear entrance of a chamber, through which blood enters. The tricuspid valve is located between the right atrium and the right ventricle. It normally has three flaps but may have two or even four flaps, and this can change with age.

To regulate passage of blood from the right ventricle into the pulmonary arteries (leading to the lungs). The valve prevents backward flow back into the ventricle and opens only when the right ventricle generates enough pressure from its contraction to squeeze the blood past the valve into the pulmonary arteries