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Andrei [34K]
3 years ago
5

Why is blood the most important component of the cardiovascular system ? please help 3 sentences

Health
1 answer:
andrew-mc [135]3 years ago
5 0
The heart is the key organ in the circulatory system. As a hollow, muscular pump, its main function is to propel blood throughout the body. It usually beats from 60 to 100 times per minute, but can go much faster when necessary.
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