In men, FSH primarily binds to which cells to promote spermatogenesis?

1. LH and FSH act on different testicular cell types. 2. LH binds to Leydig cells to stimulate testosterone production. 3. FSH instead binds predominantly to Sertoli cells within the seminiferous tubules. 4. This FSH-Sertoli signalling promotes spermatogenesis and stimulates inhibin production. 5. So Sertoli cells, not Leydig cells, are the target of FSH. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 27 "The Reproductive System", p.1290 §Control of Testosterone_