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Chemistry of fear and fright -- Chemistry Now


Chemistry of fear and fright

In time for Halloween, this video explains what fear is, chemically. It's a series of responses in the brain and body--including an increase in heart and respiratory rates, blood pressure, and perspiration--after release into the bloodstream of two hormones, adrenaline and cortisol, that ready the body for "fight or flight" action.

Credit: NBC Learn and the National Science Foundation (NSF)

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