Each heartbeat begins with an action potential generated at the sinoatrial node or simple call the SAnode.
yes but it isn't accurate to your normal heartbeat
The normal heartbeat rpm for someone who is aged 18 is between 60 and 100.
Normal.
This usually causes the irregular heartbeat to be reset into a normal heartbeat.
The heartbeat you feel in your lower stomach is the abdominal aorta beating and it is perfectly normal.
YOu really need to talk to your doctor or nurse about this as you have not said why you cannot hear a heartbeat.
yes
heart rate of 76 indicates what??
A dream-initiated lucid dream starts as a normal dream, and the dreamer eventually concludes it is a dream.
pulse
yes
refractory period.