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Adrenal glands (also known as suprarenal glands)is what you are referring to and it is part of the nervous system. The two glands are located on top of the kidneys and are responsible for our "fight or flight" reaction towards life threatening situations.

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14y ago
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8y ago

The autonomic nervous system would increase the heart rate when scared.

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Q: Which body system is responsible for increasing heart rate when you are scared or injured?
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