Your Days Are NumberedRiddles are little poems or phrases that pose a question that needs answering. Riddles frequently rhyme, but this is not a requirement.Ubiquitous rhythm,
Paced by a charge, On and on it goes Until day is done. Testimony of life To be seen, felt, and heard, Only a cold man Slumbers without one. AnswerA Heart BeatThe heart's rhythm is controlled by the sinoatrial node (the heart's pacemaker), which sends out electrical charges through the heart that cause it to contract. The heartbeat can be seen on an EKG, felt as a pulse by the fingertips, & heard with a stethoscope. Hide What Next?
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