Testicular descent is controlled in pa by
Testicular descent through the inguinal canal is controlled in pa by Leydig cell production of insulin-like factor 3 (INSL3), which acts a receptor termed GREAT ( G protein-coupled receptor affecting testis descent). Ref Harrison 20th edi page no 2769
Insulin like factor 3(INL 3)
RANKL
FSH
LH
Endocrinology