How do hormone responses occur so rapidly? When people are frightened/surprised, they can almost immediately feel a rush of adrenaline and heart rates rise, faces flush, etc. How do hormones reach appropriate organs so quickly? Why isn’t there more of a delay for the hormones to travel?
In: Biology
Your brain also contains neurotransmitters that are stimulating. SO when you are frightened nerve cells will release norepinephrine in the brain which increases arousal, vigilance, etc. This would be the initial sensation at fright followed very quickly by the release of adrenaline which stimulates heart rate, etc.
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