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After running, Ollie’s blood pressure was high. His nervous system sensed this and sent a message to decrease heart rate and blood flow.

Which system worked together with the nervous system?

User Cliu
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2 Answers

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B) Circulatory System

This is because the circulatory system is the system that controls blood flow and pressure.
User Kendon
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the circulatory system I believe
User Robert Winkler
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