How do your kidneys know what the status is of inside your blood, They know that because they receive signals from the endocrine system and the nervous system.

肾脏何以得知血液组分的状态,它们能够知道这些是因为它们接收到,来自内分泌系统和神经系统的信号

耶鲁公开课 - 生物医学工程探索课程节选

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

耶鲁公开课 - 生物医学工程探索课程节选

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