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Rahul Manoj: Spermatogenesis – The Journey of Sperm Development
Oct 5, 2025, 06:12

Rahul Manoj: Spermatogenesis – The Journey of Sperm Development

Rahul Manoj, Senior Embryologist at Best Life Fertility Center, shared a post on LinkedIn:

“Day 4

Spermatogenesis: The Journey of Sperm Development

Spermatogenesis is the process by which male gametes (spermatozoa) are produced in the seminiferous tubules of the testes.

  • Location: Seminiferous tubules
  • Duration: ~64–72 days

Key Stages:

  • Spermatogonial Phase: Mitotic proliferation of spermatogonia (stem cells).
  • Meiotic Phase: Formation of haploid spermatids via meiosis I and II.
  • Spermiogenesis: Morphological transformation of spermatids into mature spermatozoa (head, midpiece, tail).
  • Spermiation: Release of spermatozoa into the lumen for epididymal transport.

Hormonal Regulation:

  • FSH: Stimulates Sertoli cell activity.
  • LH: Stimulates Leydig cells → Testosterone production.
  • Testosterone and Inhibin B: Maintain negative feedback on hypothalamic-pituitary axis.

Any disruption in this process (hormonal, genetic, or environmental) can lead to oligospermia or azoospermia, affecting IVF outcomes.

Today’s Question:
In your experience, which factor impacts sperm quality the most — hormonal imbalance, lifestyle (e.g., heat, smoking), or genetic causes?”

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