Biology / Unit 13 Bio 3337 short lesson, about 20 seconds
The HPG Axis and Hormonal Control of Male Reproduction
Captions available
The idea
Gonadotropin-releasing hormone drives pituitary FSH and LH release, per Bio 2955, which in males stimulate sperm production and testosterone secretion.
In practice
LH stimulates testosterone-producing cells directly; FSH acts on separate cells supporting sperm development.
Where people slip
FSH and LH are the same two hormones in both sexes; only their target cells and downstream effects differ.
Your place on the trail
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