Regarding the endocrine system. What is used to transmit info-to deliver message after binding to receptor?
The response to a hormone depends on both the hormone and the target cell. In fact, various target cells respond differently to the same hormone. But, we can make some generalizations.
Essentially, a big criteria is whether or not the hormone is lipid-soluble or water-soluble. For lipid-soluble hormones, the receptor is inside the target cell. For water-soluble ...
How the endocrine system transmits is explained in detail in this solution.