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Which hormone causes heart rate, breathing rate, and alertness to increase?

User Karthy Sbk
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Answer:

Catecholamines

Step-by-step explanation:

Catecholamines are hormones made by your adrenal glands, which are located on top of your kidneys. Examples include dopamine; norepinephrine; and epinephrine (this used to be called adrenalin or adrenaline). Your adrenal glands send catecholamines into your blood when you're physically or emotionally stressed.

User Gzimmers
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