Dreams that involve hair loss or the loss of teeth, false teeth, etc, are normally a sign that you're worried about either aging, or - more frequently - the passage of time, that life is passing you by in some way.<br /> <br /> I don't think you can analyse dreams precisely.
SA node. the main pacemaker that initiates each heart beat located at the junction of the superior vena cava and the right atrium the SA node generates electrical impulses at 60 to 100 times per minute and is controlled by the sympathetic and parasympathetic nervous system.
A pacemaker is a device that administers electrical energy to the heart to stimulate contraction and regulate its rhythm. Pacemakers may be permanent or temporary (e.g. transcutaneous, transvenous or epicardial wires).The essential components of a pacemaker are: 1  Pulse generator (the power source).nd letter: Chamber sensed â dual chamber (atrial and ventricle). 3rd letter: Pacemaker response to a sensed event â dual response (can trigger or inhibit). Thus a pacemaker functioning in DDD mode can pace either or both the atria and ventricles.