{"type":"video","version":"1.0","html":"<iframe src=\"https://www.loom.com/embed/5914ec5269d247abb491d3607ed44ac6\" frameborder=\"0\" width=\"2560\" height=\"1920\" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>","height":1920,"width":2560,"provider_name":"Loom","provider_url":"https://www.loom.com","thumbnail_height":1920,"thumbnail_width":2560,"thumbnail_url":"https://cdn.loom.com/sessions/thumbnails/5914ec5269d247abb491d3607ed44ac6-f9ab864d6c7ccc86.gif","duration":3138.36,"title":"Male Reproductive System Structures and Hormones","description":"This Loom reviews key structures and functions of the male reproductive system, emphasizing the testes and spermatogenesis. It explains sperm production in seminiferous tubules, roles of Sertoli cells and interstitial (Leydig) cells, Sertoli cell inhibition of FSH via inhibin, and the blood testis barrier, plus clinical correlations like cryptorchidism (about 3 percent full term, 30 percent premature; surgery by about 18 months). It also covers duct transport pathways (epididymis, ductus deferens, ejaculatory ducts, urethra) and accessory gland secretions (seminal vesicles 60 percent of semen volume, prostate including PSA for cancer screening). Hormonal control is summarized via GnRH, LH, and FSH, including testosterone to DHT conversion by 5 alpha reductase and urethral divisions (prostatic, membranous, spongy)."}