Lh

stimulates testosterone production

Figure 12.6 FSH and LH secretion. The hypothalamus secretes GnRH and the pituitary gland secretes FSH and LH. FSH and LH act on the testes of a male, resulting in sperm and testosterone production, but in females they stimulate the ovaries to produce egg cells.

LH. In males, FSH stimulates sperm production and LH stimulates testosterone production. In females, FSH stimulates egg-cell development and LH stimulates ovulation (Figure 12.6).

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