natileighrodgers natileighrodgers
  • 13-10-2021
  • Biology
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what is a closed circulatory system

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vivipinedax11
vivipinedax11 vivipinedax11
  • 13-10-2021
Sorry if this is wrong but a closed circulatory system is blood that is contained inside blood vessels, circulating unidirectionally (in one direction) from the heart around the systemic circulatory route, then returning to the heart again.
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