What is an endocrine system ?

Why is the endocrine system considered a chemical extension of the nervous system ?

Why is the endocrine system considered a chemical extension of the nervous system?

Nervous system and endocrine system work in coordination with each other. What is the significant difference between the two systems?

Compare the nervous system and endocrine system (hormonal system) for control and coordination in humans.

Which acts as a link between the nervous system and endocrine system?