Heart

The pressure in the left ventricle is significantly higher than the pressure in the right ventricle. This is true with the assumption that you are referring to ventricular systole (contraction of the ventricle). The left ventricle forces blood out of the heart into the aorta to all parts of the body, and that same pressure forces blood back through the veins.

I doubt it. Once your brain is without oxygen for even a few minutes, it can have long term effects. Now, if the heart attack happend, but the heart started working again before the 6 minutes, there might be a better chance.

The left ventricle is found in the left side of the heart underneath the left atria at the bottom. It pumps oxygenated blood through the aorta to the rest of the body. It has the thickest wall as it needs to overcome systemic circulation.

The heart is divided into 4 chambers: 2 on the right hand side and 2 on the left. Each upper chamber is known as an atrium and each lower chamber as a ventricle. The 4 compartments are known as: the right atrium; the right ventricle; the left atrium and the left ventricle.

Blood is pumped through the body by the heart by two different circuits, one of the circuits in the systemic circuit and the second circuit is the pulmonary circuit.

The system circuit, starts via the left atrium and passing the mitral valve down into the left ventricle. The ventricle will then contract shortly after the atria have started relaxing and followed by the closing of the atrioventricular valves, so blood does not back wash into the atrium. Pressure will becoming higher in the left ventricle allowing ventricular systole's second phase to begin by forcing blood through the aortic semilunar valve up into the aorta so blood may reach the rest of the tissues in the body. Afterwards, the ventricles will becoming diastoling (relaxing) and pressure is now higher in the aorta then it is within the ventricles and this will cause back flow of blood back down to the ventricles but the aortic semilunar valve is has shut itself so blood may not backwash back into the ventricles. During this time, blood will be slowly returning back into the left atrium by ventricular diastole second phase & atrial systole but do note that the atrioventricular valves are still closed so blood doesn't wash into the ventriculars.

Blood will travel through arteries then to arterioles and lastly to capillaries so it may begin a gas exchange of oxygenated blood to the tissues to unoxygenated blood back to the heart, via the capillaries, venules, veins then superior & inferior vena cava.

Next is the pulmonary circuit which it will return the deoxygenated blood into the right atrium via the superior/inferior vena cava down the tricuspid valve to the right ventricle and blood will be forced up into pulmonary trunk via the pulmonary semilunar valve to the pulmonary arteries via the ventricular systole (same exact process as systemic circuits.) It will then travel towards the lungs, via the ateries then arterioles and capillaries once again but this time the capillaries with run along aveoli which are air sac's of the lungs that control the gas exchange between our atmosphere's....So, as you breath out you are going to be releasing the carbon dioxide from the tissues that were collected from those veins and transported via the arteries but as you breath in. oxygen will be inhaled back into the aveoli and will now allow oxygenated blood to return it back into the pulmonary venules then to the pulmonary veins to return back to the heart so it may re-enter back into left atrium and pass the mitral valve into the left ventricle via ventricular systole and back through the aortic semilunar valve to the aorta and to the rest of the bodies tissue.

Heart related emergency generally occurs due to blockage in arteries and can lead to death in some severe conditions. There are various factors which affect the severity of symptoms such as gender, age, immunity and medical conditions etc.

The very initial symptoms of a heart related emergency is Vomiting, chest pain, shortness of breath, lightheadness, extreme fatigue etc.

Does a heart make decibels? Never heard a heart.

Vena cava, right atrium, tricuspid valve, right ventricle, pulmonary trunk, pulmonary arteries, lungs, pulmonary veins, left atrium, bicuspid valve, left ventricle, aortic semilunar valve, aorta.

They enforce a one-way blood flow through the heart, operate passively (no active contraction required), and separate atria from ventricles, and ventricles from the large arteries that leave them

Yes a stethoscope listens to the heart,lungs and stomach sounds.It detects all kinds of abnormalities in the heart like murmurs-extra beats known as PVC or PAC's.Lung sounds like pneumonia-respiratory infections etc.Stomach sounds also to see if the bowels are working correctly.

Depending on how light or heavy exercise is will depend on the change that occurs.

Typically during exercise heart rate will increase. This is in order to increase blood flow to the working muscles to allow for increased respiration - in order for the muscles to work efficiently. Therefore the more strenuous the exercise, the more your heart rate will increase.

Blood pressure will also increase during exercise and again depends on intensity levels. During exercise such as running/cycling/swimming systolic pressure will increase progressively whereas diastolic pressure will increase only slightly.

During weight lifting exercises, both systolic and diastolic pressures will rise.

Obviously these effects will vary from person to person, depending on age, gender, exercise level, exercise intensity etc. etc.

The blood that leaves the right side of the heart is passed into the pulmonary arteries. This blood is oxygenated in the lungs and passes through the pulmonary veins into the left side of the heart.

Ok, from the right atrium to the tricuspid valve, to the right ventricle, to the pulmonary semilunar valve, to the pulmonary trunk, to the pulmonary arteries, to the lungs, to the pulmonary veins, to the left atrium, to the bicuspid valve to the left ventricle, to the aortic semilunar valve, to the ascending aorta, to the descending aorta, through the thoracic aorta, to the abdominal aorta, to the renal arteries, to the segmanetal arteries, to the lobar arteries, to the interlobar arteries, to the arcuate arteries, the interlobular arteries, to the afferent arterioles, to the glomerulus, to the efferent arteriole- Heather Crowe This is the broad overview From the post glomerular efferent arterioles, to and through the vasa recta (network of peri-tubular capillaries). then the reverse of what Heather said starting with the interlobular VEINS to the renal VEINS

The left side of the heart seperates the atrium and the ventricle by a bicuspid valve, it lets blood into the ventricle. It's a one way valve. When the blood wants to re-enter the the atrium it goes through a semi lunar vavle. The valve on the right side of your heart is called a tricuspid valve.

four chambers: right atrium left atrium right ventricle left ventricle

adrenaline is released into the bloodstream

The Gate valve is the stop valve & the Globe valve is the fluid Regulating valve.

tricuspid/ right atrioventricular valve.

No.

Actually humans can have 2 hearts.

A few years back in Canada; a boy was born with 2 beating hearts, as seen in sonogram. But when born, the right heart stopped beating. Doctors our not sure, but they find it possible for the right heart too start beating when the left one dies out. they boy also posseses a much higher amount of cells than an average human and a high healing factor.

hope this helps.

my friend i believe they use the whole heart and don't divvy it up among differant receivers

They will transplant the whole heart. Sometime they can use only valves because the donor had died before the heart could be saved.

www.organ-transplants.com

There are several different stages in the heart cycle at which different parts of the heart relax, but people are most often concerned about this as it pertains to blood pressure. In that case, the diastolic pressure is when the heart is relaxed.

circulation happens so the blood from you heart can pump to all the vains in the different parts of your body.