Within the guts's higher right chamber is a bunch of cells called the sinus node. The sinus node is the heart's pure pacemaker. It makes the sign that starts off Every single heartbeat. Bradycardia comes about when these signals slow down or are blocked. A 2018 paper by the https://coingenius.news/reviving-the-90s-nintendo-game-boy-as-the-next-big-copyright-wallet/