Best Answer - Chosen by Voters in order for the body to increase
its core temperature, it must stimulate metabolic processes in
order to generate heat. the hypothalamus receives stimuli from
thermoreceptors all over the body that temperature is falling.
It secretes pituitary hormone releasing factors which causes the
anterior lobe of hte pituitary gland to begin secreting TSH
(thyroid-stimulating hormone) which in turn, stimulates the
release of thyroxine in the Thyroid gland, a hormone which
stimulates the increase in metabolic processes, generating heat.
if the body is too cold, the hypothalamus releases pituitary
hormone inhibiting factors, which then causes the inhibition
(decrease in secretion, NOT total inhibition) of all resulting
hormones (i.e. TSH and thyroxine), causing all metabolic
processes to slow down, generating less heat. i hope this makes
sense :)