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| − | Sex hormones are produced by the zona reticularis of the adrenal glands in addition to those produced by the ovary and testis.
| + | ==Introduction== |
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| − | The '''testes''' produce '''androgens'''. These increase mitosis in the skin as well as increasing hair growth over the body. They also increase sebaceous gland secretion.
| + | ==Male Sex Hormones== |
| | + | Male sex hormones are regulated by negative feedback systems that operate at various levels within the male sex hormone system. |
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| | + | ==Female Sex Hormones== |
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| − | The '''ovary''' produces '''oestrogens''' and '''progesterone'''. Effects of oestrogens include a decrease in collagen production, a decrease in sebaceous secretion and decreased epidermal thickness. They also decrease hair growth, but increase skin pigment
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