In sports, a pacemaker or pacer is a competitor who enters an athletics race with little or no intention of winning, but purely to set a fast pace for other competitors to follow.
In biology and medicine,
Cardiac pacemaker is a group of cells within the heart that together initiate contractions and set the pace of beating.
Artificial pacemaker may be implanted to provide proper heart rhythm when the body's natural pacemaker does not function properly.
Brain pacemaker is a device which sends electrical impulses to the brain in order to releive depression, epilepsy and other conditions.
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A pacemaker (or "artificial pacemaker", so as not to be confused with the heart's natural pacemaker) is a medical device designed to regulate the beating of the heart.
The purpose of an artificial pacemaker is to stimulate the heart when either the heart's native pacemaker is not fast enough or if there are blocks in the heart's electrical conduction system preventing the propagation of electrical impulses from the native pacemaker to the lower chambers of the heart, known as the ventricles.
The pacemaker generator is a hermetically sealed device containing a power source and the computer logic for the pacemaker.
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