what is a fibulator device for the human heart?
156838
A defibrillator sends electricity into a person's chest to stop all the muscle activity at once.  When the muscles automatically resume they do so in the correct order.
861263
It stops the heart from beating.
893925
Hi. Try this link : http://www.ynhh.org/cardiac/heart/index.html
263076
The heart has a natural pacemaker. It operates with its own electrical impulses. If excess current is introduced to the body, it will speed up the heart, a-fib will result and cardiac arrest...because the heart will get mixed signal and cannot keep up the pace of the heart..the blood will back up in the atrium of the heart and not enough blood will be pumped to the body...the electrical shock will destroy the heart muscle..reulting in cardiac arrest before the brain is affected...death would occur.
338856
Heart Hands Head Health.
781922
A circulatory system (cardiovascular system in biology classes) is an organ system that moves substances to and from cells; it can also help stabilize body temperature and pH (part of homeostasis). There are three types of circulatory systems (from simplest to most complex): no circulatory system, open circulatory system, and closed circulatory system.\n\nYou could get more information from the link below...
489834
Left ventricle because it has to provide force to push blood through entire body.
606824
I am not a med student but I have a st jude pacemaker. Are you having problems with your equip? I have had to have my wires replaced twice and now the new set is fractured, I clotted the first time so my cardiologist says that when he changes them he will have to open my chest and put me on the by-pass machine so that he won't disturb any of the clotted area.....I' m really worried about it.
312922
Yes, in that they disturb the proper function of the heart in terms of how much blood it can pump out.\n\nArrhythmia is an abnormal heart rhythm. It may mean that the whole heart is beating too fast (tachycardia) or too slow (bradycardia), or it may be that the different bits of the heart have gotten out of synch with each other. The heart has four chambers: two small atria, and two larger ventricles. The ventricles push the blood out of the heart - the right to the lungs, where it gets oxygen and then comes back to the heart, and the left to the body. The atria collect the blood and dump it into the ventricles.\n\nNormally all the muscle of the atrium contracts at once, to push blood into the ventricle, while the ventricle is relaxed. Then the ventricle contracts to push the blood out of the heart, while the atrium is relaxed. In both atria and ventricles, you can get problems with either a) the whole thing contracting at once, like normal, but too fast, or b) the muscle of the chamber (atrium or ventricle) gets disorganized and starts contracting all at different times, so it wibbles around and can't push blood out properly.\n\nThe former is called tachycardia or flutter; in the atria it's atrial flutter (rate 250-350 typically, as opposed to normal heart rate 60-100), in ventricles, usually ventricular tachycardia (rate around 150-200). The latter is called fibrillation. Atrial fibrillation is not a huge deal but can predispose to stroke (because the inefficient contractions of the atrium mean blood hangs around in them, and can form blood clots, that then get spat out into the brain). Ventricular fibrillation, on the other hand, is immediately life-threatening and is what people get shocked for during resuscitation events.\n\nSo, although the heart muscle may be functional, the abnormal pacing means that the heart function itself is inefficient.
322968
The artificial heart\nArtificial heart valves\nDialysis Machine\nUltrasound\nMRI\nFluoroscopy\nCT Scan\nBio-Mems\nProsthetic Limb\nStents\nVascular grafts\nInfrared Cameras for motion analysis\n\nPersonally designed a device that uses accelerometers to measure Essential Tremor in children.\nHope that helps
154428
I'm not sure if this is enough info but...\nWhen the Left Atrium is full of blood, the heart muscle in the Left Ventricle relaxes so the muscles attached to the Mitral Valve open.
458027
without a pacemaker, such as an intermittent, the heart will continue to go into constant dysrythmia or atrial, ventricular, or sinus fibrillation. this makes it to where the hearts effectiveness(cardiac output) is decreased to nearly if not full asystole(without constriction) and blood will not flow through the body providing oxygen to all the tissues, including "the brain" and you will die due to ischemia- lack of oxygen. the pacemaker "paces" the heart keeping it under control like a kid on Ritalin
1003119
look at this 3D pic then read\n\nhttp://library.thinkquest.org/C003758/rotate.htm\n\nIn the human body, the heart is normally situated slightly to the left of the middle of the thorax, underneath the sternum (breastbone). The heart is usually felt to be on the left side because the left heart (the left part of the heart) is stronger (it pumps the blood out). The heart is enclosed by a sac known as the pericardium and is surrounded by the lungs.Betwen the pericardium and the heart there is a serous fluid to reduce friction during heart contractions. The apex is the blunt point at the base of the heart. A stethoscope can be placed directly over the apex and count the beats. In normal adults, its mass is 250-350 g (8-11 oz), but extremely diseased hearts can be up to 1000 g (2 lb) in mass. It consists of four chambers, the two upper atria (singular: atrium ) and the two lower ventricles. On the right is a picture of a fresh human heart which was just removed from a 64 year old British gentleman. The mass for a thin white male is usually 270-300 grams (9-11 ounces) with little fat.\n\nA septum divides the right atrium and ventricle from the left atrium and ventricle, preventing blood from passing between them. Valves between the atria and ventricles (atrioventricular valves) maintain coordinated unidirectional flow of blood from the atria to the ventricles. The ventricular systole consists of the contraction of the ventricles and flow of blood into the circulatory system. Again, once all the blood empties from the ventricles, the pulmonary and aortic semilunar valves close. Finally complete cardiac diastole involves relaxation of the atria and ventricles in preparation for refilling with circulating blood.\n\nThe function of the right side of the heart (see right heart) is to collect deoxygenated blood from the body and pump it into the lungs (pulmonary circulation)so that carbon dioxide can be dropped off and oxygen picked up. This happens through a process called diffusion. The left side (see left heart) collects oxygenated blood from the lungs and pumps it out to the body (systemic circulation). On both sides, the lower ventricles are thicker than the upper atria.\nOxygen-depleted or deoxygenated blood from the body enters the right atrium through two great veins, the superior vena cava which drains the upper part of the body and the inferior vena cava that drains the lower part which drains the portal cyrculation too full with nutrients to nourish the body. The blood then passes through the tricuspid valve to the right ventricle. The right ventricle pumps the deoxygenated blood to the lungs, through the pulmonary artery. In the lungs gaseous exchange takes places and the blood releases carbon dioxide into the lung cavity and picks up oxygen which is called external respiration. The oxygenated blood then flows through pulmonary veins to the left atrium. From the left atrium this newly oxygenated blood passes through the mitral valve (also called the bicuspid valve) to enter the left ventricle. The left ventricle then pumps the blood through the aorta to the entire body. Even the lungs take some of the blood supply from the aorta via bronchial arteries.\n\nThe left ventricle is much more muscular, which is 1.3 - 1.5 cm (.5-.6 in) thick, than the right, 0.3 - 0.5 cm ( .1-.2 in) thick, as it has to pump blood around the entire body, which involves exerting a considerable force to overcome the vascular pressure. As the right ventricle needs to pump blood only to the lungs, it requires less muscle.\n\nEven though the ventricles lie below the atria, the two vessels through which the blood exits the heart (the pulmonary artery and the aorta) leave the heart at its top side.\n\nThe contractile nature of the heart is due to the presence of cardiac muscle in its wall which can work continuously without fatigue. The heart wall is made of three distinct layers. The first is the outer epicardium which is composed of a layer of flattened epi
512583
An artificial heart or other life saving device.  Then I'd be giving life, even if I don't technically have one.  Or something that kills witches.
475089
cardiac muscle or myocardium
1058392
There are actually several machines on the market to do chest compressions the first is called by many paramedics the "Thumper" i do not know the brand name. The second that is being looked at by several hospitals in Virginia and is being used in Richmond and several surrounding counties is a device that looks like a backboard and has straps that are adjusted by the device to squeeze the chest at appropriate intervals. It is FDA approved for individuals 18 and older at this time. it is designed to provide consistent effective compressions while allowing the rescuers to focus on treatment. As the design compresses the entire chest it also provides for air exchange thus assisting not only with cardiac circulation but oxygenation as well. If you look at Richmond EMS website you might be able to find the device to get the Name.
198753
The left ventricle and the right ventricle.