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.
The heartâs electrical system is pretty amazing. Itâs our bodyâs built-in pacemakerâmaking sure the heart beats at a normal, even rate. With each heartbeat, it sends signals to the heart muscle, telling it when to contract and pump blood to the brain and the rest of the body. When you have heart block, the signals between the heartâs chambers can be partially or totally blocked.