Heart

Generally your heart will stop beating before you die. The only case I can think of where your heart may beat after you die is in the case of brain death, and that is only because you are on artificial life support.

Blood leaves the left side of the heart and travels through arteries, which gradually divide into capillaries. In the capillaries, food and oxygen are released to the body cells, and carbon dioxide and other waste products are returned to the bloodstream.

60 to 100 beats per minute for the average adult.

That is the Aorta. The main artery of the body.

My husband had an aortic heart valve replaced. Essentially he was rediculously misdiagnosed by three doctors - in the same practice - over a period of a month, where he deteriorated, to the extent that I demanded he be admitted to hospital. 24 hours later would have been too late. So, he had an emergency heart valve replacement which was caused by a bacteria that literally ate away at the heart valve until there was nothing left of it.

The complications from that arose from the previous doctors having given him a serious dose of penicillian and then another type of anti-biotic, so they could not culture anything off the heart valve. He was then placed on a very expensive and life preserving anti-biotic for 6 weeks. This was a life saver. To this day, the question cannot be answered as to what the bacteria was that affected him.

The heart, because it is removed from the body and then put back, may also be rejected by the body, which therefore makes the first 48 hours after surgery critical. Once you are over that hurdle, you will start to heal. You will have your good days and your bad days.

Depression is also something that people will have to take into consideration - men especially. It does not mean your pants will turn into a skirt - feel the emotion and talk to your family - the depression lifts with support and understanding from family and friends.

Take it easy - there is only one Bruce Willis - you need to take it easy, don't drive or do anything like lifting things for at least 8 weeks. Let others help you, and if there is no-one to help you with shopping, shop online or call a taxi.

Don't smoke again - it affects your blood thickness, and your general quality of life. Besides, it stinks and does not do your sex life or anyone close to you any good. Sorry, but it's true - smoke is disgusting, dirty and a definite turn off. You have a new lease on life - respect it, respect your body and respect your family and friends and the trauma they too went through during your procedure and now recovery - smoking is for morons.

Forgetfulness - yep, good news - you have not lost your plot or your marbles. Your body has other things to worry about than remember how to use your cell phone, where the toilet rolls are kept or how to make coffee. When your body starts to relax and accept what has happened to it, it will soon allow your brain to function properly. But, you must read and try to get back to grips with all the mental stuff as soon as possible. Engage in stimulating conversation, watch interesting programmes on telly, and read the newspapers, phone people on your cell phone, ask someone to help you remember where your directory is, or how to answer the darned thing. Once you have done it once, you may have to be reminded again - but then you are sailing again. It's okay, you are not stupid and have not left your brain in the hospital. It's in your head, having a little nap.

With a mechanical heart valve, you have another side effect and that is being placed on Warfarin, or Coumadin. This will keep the blood from clotting and obviously keep the valve working effectively as a result. A friends husband has just had an emergency mechanical valve replaced after 10 years because his Warfarin levels were not controlled adequately, so clots may have formed on the valve and tissue began growing on the clots. Tissue will not grow on the valve itself, but the clots which are biological, well, it will grow on that. So, those of you who are on Warfarin and think you can jimmy the system - it's not worth it. You could land up at square one again.

Warfarin must be controlled by blood tests, and you have to watch what you eat and not to drink more than 2 tots of alcohol a day - trust me, it is not worth the bleeding noses, burning intestines etc if you overstep the mark. You can bleed to death, internally if you be stubborn and stupid about it. Warfarin is like oil in your engine. You can't go and chuck water in, or let it get old and sticky - your engine will sieze.

The wires they tie your sternum back together with can also be rejected by your body as in my husbands case. He had excruciating pain eminating from the sternum whenever he breathed deeply, or moved, which extended into his chest itself. He was most baffled, and not one to complain about pain, I knew he was desperate when he went back to the doctors who suggested the wires come out. He had them out yesterday, and says the pains are gone. He feels like a new man. Lucky to be alive in the first place, and now even luckier that they found the source of pain post op.

It is not an easy procedure, your body has gone through some serious trauma, and your body was on by-pass, with your heart out of your body, a foreign object possibly put into it, as in a heart valve, so your body also goes through shock and horror at the experience, and will rebel. Accept what has happened, and understand that you have a second chance. Don't blow it.

Good luck.

what is the normal heaqrt rate for a children 12mon-18years old

precordium

Depends on the med school you want to go to. Most want Biology/Chemistry (or possibly both). You can usually be flexible with the other A-level you study. I'd recommend checking the requirements at the universities you are interested in attending.

You should know that there are very few training jobs for cardiothoracic surgery around at the moment as intervention cardiology has reduced the need for as many open operations. However once you start med school you'll probably change your mind multiple times about career choice (I know I did!)

Hope that helps :)

-Mike

Blood first enters the heart from the vena cavea into the right atrium. The pumping action of the heart then moves the blood into the right ventricle. From the right ventricle the blood is pumped into the pulmonary arteries which lead to the lungs. The blood is oxygenated and returned to the heart from the pulmonary veins to the left atrium. The pumping of the heart then moves the blood into the left ventricle and with a very strong contraction sends the blood throughout the rest of the body through the aorta.

There are several factors that determine how lifestyle effects the possibility of onset of heart disease.

1, There will inevitably be natural wear and tear of the vital organs, Heart, Kidney, Liver etc. "Life begins at forty" is a cliche of the first millennium "Medical problems begin at forty" should be a new cliche for the 2nd millennium

2, Sedentary life style means that like any muscle the heart will not been maintained properly.

3, Obesity, or being consistently overweight over a number of years adds stress and pressure to the pumping mechanism of the heart. Not to mention the possibility of developing Diabetes, a disease that effects as much as 20% of adults in the western world.

4, Diet has a huge impact on the healthiness of the heart, in particular the consumption of saturated fats and sugars.

5, Smoking. It is proved beyond doubt that even the inhalation of secondary smoke from cigarettes can have a catastrophic effect on the heart.

6, Excessive Alcohol consummation or binge drinking amasses huge pressure on the arteries

7, Stress disrupts nearly every system in your body. It can raise blood pressure, suppress the immune system, increase the risk of heart attack and stroke, contribute to infertility and speed up the aging process. Longtime stress can even rewire the brain, leaving you more vulnerable to anxiety and depression.

7, All of these above compound into a serious attack on the major organs and without doubt at minimum will lead to the onset of Type 2 Diabetes. From then on, unless intercepted Early and treated correctly will inevitably lead on the deterioration of the blood vessels, especially in the kidney, liver, eyes, brain, toes and feet and ultimately the heart.

The solutions are

Stop smoking, moderate your intake of alcohol, control your diet - especially the intake of saturated fats and sugars, consult with your GP or local clinic and have blood pressure checks and ECG's to check the condition of your heart, and blood tests or a glucose tolerance test to check for sugar levels in the blood.

Take regular effective exercise. It doesn't take much to turn the tide, establishing a regular effective exercise regime can have an immediate effect on the well being and condition of the heart and help deal with all the other symptoms above. If you are not used to regular exercise you should check with your GP and consult a sports professional to make sure you are doing the correct effective type of exercise. They will help you to set achievable goals and targets to help you to maintain the regime.

There are many organisations providing information on all of the above points.

You only have to use any search engine to find advice on Heart Disease, Anti Smoking, Diabetes or any other of the topics mentions.

Ultimately Personal Responsibility is the key factor. If you suspect you or your family or friends may be effected by any of the above topics you should seek medical advice from your GP or local Health Clinic.

There are so many sports clubs and activity clubs now. Search your local directory for the best one for you.

I stress, you should seek personal medical advice to understand all of the implications of the above topics.

I am not a health professional, but I am someone who is effected by all of the above and have decided to choose life...

Jim Hannigan

Try picsearch and type in " a real human heart" i tried it for school and it worked i hope this helped you.

See the related link, it contains both photos and diagrams.

Heart blocks slows impulse and lengthens the QRS complex of ECG; over all lowers the pulse

The right is bigger.

right atrium,left atrium.right ventricle and left ventricle

The mammalian heart is a complex structure with 4 chambers, the left and right atrium and the left and right ventricle With the atria located above their corresponding ventricles. Blood comes into the heart from the body through the right atrium and then proceeds into the right ventricle. From there, it gets pumped through the pulmonary artery where it gets transported to the lungs. In the lungs, oxygen is added to the blood, and then returned to the left atrium of the heart. The left atrium then empties into the left ventricle. The left ventricle then pumps the blood out the aorta which then directs the blood through the rest of the body where its ready to start the cycle again.

There are many answers but I would say because it supplies blood and oxygen to our entire body and make other vital organs functional such as the brain. In short, without the heart we would have no blood flow, and without bloodflow we could not survive.

The iliocecal valve is an involuntary smooth muscle sphincter located between the ileum (small intestine) and the secum (portion of large intestine). Its function is to prevent backflow or reflux into the ileum.

Fibrillation is when all the cells of the heart start conrtacting of their own accord, ie no longer under the control of the SA node. This can happen because the Membrane Potentials of the cardiac cells are very unstable and a slight concentration change in certain ions will cause the cells to start Depolarising and contracting. This means that the heart is not contracting as one smooth mution but in small section at a time giving it an appearance often reffered to as like "a bag of worms". Fibrulation ot the heard causes an Electrocardiogram wave to look completely random with no pettern just a squigly line. The consequence of fibrulation is that, without the normal smooth contraction as one organ, there is no decrease in the size of the heart Chamber thus no blood is forced out into the circulation. In short the the effect of fibrulation is a that blood stops being pumped around the body. The way this is corrected is by us of a Defirulator. These are the machines with the pads that send electric pulses into the body (you've possibly seen them on ER or some other medical drama). How these work is not, as some believe, to kickstart the hear at all. The opposite infact, they stop the heart, momentarily, giving the SA node another chance to take control. After a while though there is not point continuin as the patient will have spent to long not receiving nutrients to the brain and will have died.

The valves in your heart opening and closing.

Pump blood to the entire body. The right ventricular heart only has to pump blood to the lungs, but the left ventricular heart has to pump it from the tops of your brain to the bottom of your toes.

Leukocytes are divided into granulocytes and agranulocytes:

1. Granulocytes (have granules in their cytoplasm).

a.Neutrophils are the most common. Eat disease organisms (phagocytes).

b.Eosinophils kill parasites

c.Basophils release heparin and histamine, may move from blood to go to site of infection and are called mast cells

2.Agranulocytes (without granules)

a.Monocytes largest white cell moving to tissues as a macrophage.

b.Lymphocytes longest lasting (up to years) involved in antibody actions.

baily crum

The section of the heart that divides the left and right side of the heart is called the interventricular septum.