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dangina [55]
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?
Biology
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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