Question

6. What is the primary organ of the circulatory system?​

Answer 1

Answer:

The circulatory system consists of the heart, blood, blood vessels, lymph, and lymphatic vessels. While the heart is the only “organ” of the circulatory system, it is really only a vessel surrounded by muscles.

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Answer 2

Answer:

The heart is the primary organ in the circulatory system.

Explanation:

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