It's not that all these layers are wrapped around the nervous system and the endocrine system.

不是所有功能,都围绕着神经系统和内分泌系统展开的

耶鲁公开课 - 生物医学工程探索课程节选

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