I got another question again of the kind of "Why":
Why many anterior pituitary hormones were not granted "tropic" in their names although they are tropic in nature, stimulating (or working on) other glands.
and why those released by Hypthalamus are not honored by "tropic" name although they are working on Pituitary (gland).
In my opinion they are all tropic messengers even if they did not get the title. What do you think? Is there any literature regarding this?