This figure shows an example of regulation of hormone secretion by a negative feedback loop. The large box labeled 1 represents the initial stimulus. What hormones are represented by the small boxes labeled a, b, and c?
A. a = TSH, b = TRH, c = TH
B. a = TSH, b = TH, c = TRH
C. a = TRH, b = TSH, c = TIH
D. a = TIH, b = TSH, c = TH
E. a = TRH, b = TSH, c = TH
Answer: E
Anatomy & Physiology
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