Final answer:
LH stimulates Leydig cells to produce and secrete testosterone. FSH stimulates Sertoli cells to release ABP, which binds to testosterone.
Step-by-step explanation:
LH stimulates the Leydig cells in the testes to produce and secrete testosterone. FSH stimulates the Sertoli cells in the testes to release androgen-binding protein (ABP). ABP binds to testosterone, keeping it at a high concentration.