Science Fair Project Encyclopedia
Pacemaker
The term pacemaker has multiple meanings:
- 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, the cardiac pacemaker is a group of cells within the heart that together initiate contractions and set the pace of beating.
- An artificial pacemaker may be implanted to provide proper rhythm when the body's natural pacemaker does not function properly.
10-26-2009 08:16:03
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details