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:
It is not well-suited for interacting with a server. With Javascript you can: 1  Detect what browser a person is using and customize the Web pages to their browser. 2  Swap images on a page to create rollovers. 3  Perform calculations in forms and check to ensure that entries in the form are correct.