keshyre8532 keshyre8532
  • 04-02-2022
  • Biology
contestada

The heartbeat is initiated by the specialized cardiac muscle cells of the ______, which are located in the posterior wall of the right atrium, adjacent to the entrance of the ______.

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palazzolorachel palazzolorachel
  • 04-02-2022
Sinoatrial node, Superior vena cava
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