Question

Which one of the following is an example of feedback control
mechanism?
(a) TRH-TSH-'Thyroxin
(b) GnRH-GTH-Thyroxin
(c) CRH ACTH-Adrenalin
(d) GnRH-TSH-Progesterone hormone​

Answer 1

TRH-TSH-Thyroxine
TRH is the Thyroxine Releasing Hormone and TSH is the Thyroid Stimulating Hormone