Q.Distinguish between negative feedback and positive feedback control of hormone secretion, giving one example of each from the endocrine system.

[!TLDR]

Negative feedback (most hormones, e.g. thyroid axis) damps the response down; positive feedback (rare, e.g. oxytocin in childbirth) escalates it. …

In negative feedback, the dominant pattern across the endocrine system, a rising level of the hormone produced at the end of a control chain acts back on the gland(s) that stimulated its release, damping down further stimulation -- for example, rising T3/T4 act back on the hypothalamus and anterior pituitary to suppress further TRH and TSH release, preventing thyroid hormone level from climbing unchecked. In positive feedback, a much rarer pattern, a rising hormone level instead drives still more of the same response -- as in oxytocin release during childbirth, where uterine stretch triggers oxytocin release, which intensifies contraction, further increasing stret …

Define each type by the DIRECTION of the loop's effect on further hormone release (suppress = negative; amplify = positiv …

Assuming positive feedback is somehow the 'normal' or more common pattern because it sounds favourable -- negative feedback is overwhelmingly the dominant, stabilising pattern in the endocrine system; positive feedback …