According
to the thermoregulatory and melanocortin pathways, how do Leptin and Insulin
modulate adaptive thermogenesis through specific hypothalamic nuclei?

Question

Accepted Answer

They exert stimulatory effects on POMC neurons in the Arcuate Nucleus (ARC) to activate the PVN-BAT axis.

Answer

They inhibit the Preoptic Area (POA) to prevent shivering while simultaneously stimulating the Raphe Pallidus (RPa) to activate Brown Adipose Tissue (BAT).

Answer

They bypass the hypothalamus entirely to act directly on the Intermediolateral Nucleus (IML) of the spinal cord, increasing sympathetic outflow to the supraclavicular fat pads.

Answer

They
primarily inhibit the Ventromedial Hypothalamus (VMH) to reduce the metabolic
cost of Basal Metabolic Rate (BMR) during periods of overfeeding.

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According to the thermoregulatory and melanocortin pathways, how do Leptin and I...

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