This blog post is a response to a question asked by one of your classmates under Endocrine A & P.
Each hormone is controlled by different mechanisms. This mechanisms determine when the hormone is secreted and when it secretion should stop.
Insulin production and control is affected by blood levels of glucose. Other hormones that affect the level of insulin secreted include Glucagon ( prevents secretion of insulin), epinephrine, Growth Hormone, Thyroxine and glucocorticoids. Here is a video that explains it all.
Aldosterone secretion is activated by ACTH and secretion ceases by negative feed back ( Aldosterone itself causes the pituitary to stop producing more ACTH)
Epinephrine, produced by the adrenal medulla is controlled by the Sympathetic nervous system
The release of prolactin is enhanced by estrogen, birth control medications and TRH ( Thyrotropin releasing hormone). It is inhibited by Prolactin Inhibitory Hormone ( Dopamine).
Gonadotropin releasing hormone (GnRH) causes the pituitary to release FSH and LH which lead to the production of estrogen and testosterone from the gonads ( sex organs). There is then negative feedback ( the estrogen and testosterone stop GnRH, FSH and LH from being produced). Below is a 3 minute video that explains this:
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