So, every time my heart would beat I'd hear the beep beep beep beep, you know, the ticking, really loud.

Answering machine At the tone, please BEEP.

Please leave a message after the beep or drop some candies in our mailbox.

Every beat of your heart depends on this crucial region, the sinoatrial node, which has about 10,000 independent cells that would each beep, have an electrical rhythm a voltage up and down to send a signal to the ventricles to pump.