Student’s question: “How are Insulin, Aldosterone, Epinephrine, Prolactin, Follicle Stimulating Hormone, and Luteinzing Hormone all controlled?”

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.

  1. Insulin:

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.

     2. Aldosterone:

Aldosterone secretion is activated by ACTH and secretion ceases by negative feed back ( Aldosterone itself causes the pituitary to stop producing more ACTH)

    3. Epinephine:

Epinephrine, produced by the adrenal medulla is controlled by the Sympathetic nervous system

   4. Prolactin:

The release of prolactin is enhanced by estrogen, birth control medications and TRH ( Thyrotropin releasing hormone). It is inhibited by Prolactin Inhibitory Hormone ( Dopamine).

5. FSH ( Follicle Stimulating Hormone) and LH (Leutinizing Hormones):

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:

Do you have a question too? That is what we are here for. Put your question(s) in the comment box below and we would get back to you ASAP!

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