The HPG Axis and Hormonal Control of Male Reproduction
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Gonadotropin-releasing hormone drives pituitary FSH and LH release, per Bio 2955, which in males stimulate sperm production and testosterone secretion.
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LH stimulates testosterone-producing cells directly; FSH acts on separate cells supporting sperm development.
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FSH and LH are the same two hormones in both sexes; only their target cells and downstream effects differ.