Endocrine are signals that get carried through the blood system.

内分泌系统的信号通过血液来传递

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The nervous system, the endocrine system which we'll start talking about a little bit today is the system that's responsible for sending signals back and forth between tissues of your body.

还有神经系统,和我们今天将要提到的内分泌系统,内分泌系统主要负责,在体内各组织之间传递信号

耶鲁公开课 - 生物医学工程探索课程节选