They make up the cardiac pacemaker, that is, the natural pacemaker of the heart. In most humans, the concentration of pacemaker cells in the sinoatrial (SA) node is the natural pacemaker, and the resultant rhythm is a sinus rhythm. Sometimes an ectopic pacemaker sets the pace, if the SA node is damaged or if the electrical conduction system of the heart has problems.
Use IE Tab for Chrome. The best way to use Java (or Silverlight, or other NPAPI-based technologies) going forward is to use IE Tab for Chrome. You can set up Auto URLs to automatically open certain urls using IE Tab, providing a seamless experience, as if Java support never went away. Get it here:
How to Enable Java. Six Methods:Enabling Java in Microsoft WindowsEnabling Java in Mac OS XEnabling Java in Microsoft Internet ExplorerEnabling Java in Google ChromeEnabling Java in Mozilla FirefoxEnabling Java in Apple SafariCommunity Q&A. Java is a programming language and platform commonly used in a number of websites and applications. When Java is not enabled, you can experience difficulty with viewing or using certain websites and applications. To use Java, you must have the add-on enabled through the Java Control Panel, and also through your Internet browser.