Question

Are hormones only secreted by endocrine glands not by excocrine glands?

Answer 1

No, both kind of glands secrete hormones but their way of transportation is different.

Answer 2

Answer:

The endocrine system works to regulate certain internal processes. (Note: endocrine shouldn't be confused with exocrine. Exocrine glands, such as sweat and salivary glands, secrete externally and internally via ducts. Endocrine glands secrete hormones internally, using the bloodstream.)