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The hypothalamus

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βˆ™ 12y ago
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βˆ™ 7mo ago

The amygdala in the brain is responsible for initially activating the sympathetic-adrenal-medullary (SAM) system in response to stress. The hypothalamus is the brain structure that triggers the activation of the hypothalamic-pituitary-adrenal (HPA) axis in response to stress.

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Q: What part of the brain initially activates the SAM system and the HPA axis?
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