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    • Control of reproductive hormones diagram.
    Rights: The University of Waikato Te Whare Wānanga o Waikato Published 16 February 2009 Size: 17 KB Referencing Hub media

    Reproductive1 hormone2 levels are controlled by signals from the brain. A brain region called the hypothalamus3 releases gonadotrophin-releasing hormone (GnRH), which stimulates the pituitary gland to produce luteinising hormone (LH) and follicle-stimulating hormone (FSH). LH and FSH stimulate the production of sex hormones4, like oestrogen or testosterone5. The level of these sex hormones then acts directly on the brain in a feedback system that helps to regulate6 further hormone production.

    1. reproductive system: The system in an organism that aids in the production of new individuals.
    2. hormone: A chemical substance secreted by an endocrine gland into the bloodstream. It acts on specific target cells to produce a given response to control and regulate the activity of certain cells or organs.
    3. hypothalamus: A region of the brain that regulates body functions, including temperature, appetite and sleep.
    4. hormone: A chemical substance secreted by an endocrine gland into the bloodstream. It acts on specific target cells to produce a given response to control and regulate the activity of certain cells or organs.
    5. testosterone: The primary male sex hormone (it is also found in low levels in females).
    6. regulated: Controlled by rules and laws. In biology: To adjust a bodily function or process. In genetics: To control the expression of a gene or genes.

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    Possum vaccines and reproductive proteins

    Here, we explain the function of reproductive proteins GnRH and ZP. These proteins are targets for contraceptive vaccines, investigated in New Zealand to help reduce possum numbers. Scientists in ...

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      reproductive system

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      2. The system in an organism that aids in the production of new individuals.

      testosterone

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      3. The primary male sex hormone (it is also found in low levels in females).

      hormone

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      4. A chemical substance secreted by an endocrine gland into the bloodstream. It acts on specific target cells to produce a given response to control and regulate the activity of certain cells or organs.

      regulated

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      5. Controlled by rules and laws.

      In biology: To adjust a bodily function or process.

      In genetics: To control the expression of a gene or genes.

      hypothalamus

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      6. A region of the brain that regulates body functions, including temperature, appetite and sleep.

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