Chapter
The Science of Sperm Development and Ejaculation
1:32:00 - 1:41:47 (09:47)
This episode discusses the components of sperm development and ejaculation, such as GnRH from the hypothalamus, testosterone from Lydig cells, and the role of supporting cells like sertoli cells.
Clips
Testosterone made by the Lydig cells within the testes act on the testes and other tissues while intratesticular testosterone concentration is a hundred times higher than the concentration of testosterone anywhere else in the body, although some testosterone will travel elsewhere in the body to have acute effects on the brain.
1:32:00 - 1:33:57 (01:56)
Summary
Testosterone made by the Lydig cells within the testes act on the testes and other tissues while intratesticular testosterone concentration is a hundred times higher than the concentration of testosterone anywhere else in the body, although some testosterone will travel elsewhere in the body to have acute effects on the brain.
ChapterThe Science of Sperm Development and Ejaculation
EpisodeHow to Optimize Fertility in Males & Females
PodcastHuberman Lab
The hypothalamus releases GnRH which causes the release of luteinizing hormone and follicle-stimulating hormone from the pituitary gland.
1:33:57 - 1:41:47 (07:50)
Summary
The hypothalamus releases GnRH which causes the release of luteinizing hormone and follicle-stimulating hormone from the pituitary gland. This, in turn, triggers the release of testosterone from the testicles, which generates a chemical milieu that allows for the maturation of spermatocytes into healthy sperm that eventually make it into the ejaculate for fertilization to occur.