Why is growth hormone not a tropic hormone?

Tropic hormones are hormones produced and secreted by the anterior pituitary, which target endocrine glands (eg Thyroid stimulating hormones, Luteinizing hormones.
Non-tropic hormones are hormones that directly stimulate target cells to induce effects. This is different from the tropic hormones in that tropic hormones bind a receptor on another endocrine gland.

Hope this helps :)

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

silty loam

hope this