Within the heart's upper correct chamber is a group of cells known as the sinus node. The sinus node is the center's normal pacemaker. It generates the signal that starts off each heartbeat. Bradycardia happens when these indicators slow down or are blocked. Poznaj podstawowe zasady bezpiecznego korzystania z https://coingenius.news/copyright-trading-platform-crosstower-raises-6m-in-seed-round/
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