It is about hormones.

Answer:
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Answer:
insulin-- produced by the pancreas in the islets of langerharn function is regulations of the blood glucose.
Testosterone produced by gonads ( testes) stimulates development of male secondary characteristics
progesterone and oestrogen produced by the ovaries
adrenaline produced by the adrenal glands
growth hormone produced by pituitary glands
thyroxine produced by thyroid gland.
Explanation:
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