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3 years ago

7

A person walks through the woods. A branch falls suddenly, almost hitting him, and his heart suddenly starts racing. What part o

f his nervous system causes his heart to race?

2 answers:

erma4kov [3.2K]3 years ago

8 0

I believe that would be the Sympathetic and Autonomic nervous system, because that sounds like the fight or flight response.

liraira [26]3 years ago

7 0

Pretty sure it would be the nerves attatched to the heart valve

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