也就是说，这种药物通过位于脑部的交感神经系统控制中枢来起作用。
That is, it works in a control center for the sympathetic nervous system in the brain.
TRH中枢效应的传出途径以迷走胆碱能纤维为主，交感神经可能亦有一定的作用。
The central effect of TRH is transmitted mainly via cholinergic fibers in the vagus. Sympathetic fibers are also involved.
肾脏肾小球旁体的交感神经支配释放肾素；血管紧张素刺激大脑自主中枢，增加交感冲动发放。
Sympathetic innervation of the juxtaglomerular apparatus in the kidney releases renin; angiotensin stimulates autonomic centers in the brain to increase sympathetic discharge.
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