Classification of Hormones by Target Tissue

Question 1

direct hormones

Answer 1

secreted and then act directly on a target tissue

Question 2

example

Answer 2

insulin: released by the pancreas causes increased uptake of glucose by muscles

Question 3

tropic hormones

Answer 3

require an intermediary to act

Question 4

example

Answer 4

GnHR from the hypothalamus stimulates the release of LH and FSH; these then act on the reproductive system. GnHR and LH do not cause direct changes in the physiology of muscle, bone, and hair follicles; rather, they stimulate production of other hormones by another endocrine gland that acts on these target tissues