Lecture: The Endocrine System

1. The adrenal medulla secretes epinephrine and norepinephrine into the blood stream. 2. The effects of these hormones resemble those of the sympathetic division neurotransmitters of the same name, except that they last up to 10 times longer when they are secreted as hormones. 3. The are used in times of stress and for “fight or flight.” 4. ................
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