Sperm Transport Pathway
📌 Sperm are produced in the seminiferous tubules located within 250 to 300 lobules of the testes.
🌊 Sperm empty into the Rete Testis, which acts as a pooling area collecting sperm from hundreds of seminiferous tubules.
〰️ Approximately 12 to 15 efferent ductules convey sperm from the Rete Testis into the head of the epididymis.

Epididymis Structure and Function
🔬 The epididymis consists of three regions: the head, the body (formed by the duct of the epididymis), and the tail.
⏳ Immature sperm are stored and mature over approximately 20 days as they travel from the head to the tail of the epididymis.
🔋 During storage, the epididymis nourishes sperm and helps them become motile; older sperm are reabsorbed if ejaculation does not occur within a few months.

Ductus Deferens and Ejaculatory Duct Formation
⬆️ Sperm move from the epididymis into the ductus deferens (a continuation of the duct of the epididymis) during ejaculation, which travels up into the pelvic cavity near the bladder.
🔗 The ductus deferens is part of the spermatic cord, which also contains blood vessels and nerve supply encased in connective tissue.
➡️ The distal end of the ductus deferens enlarges into the ampulla, where it merges with the seminal vesicle to form the ejaculatory duct.

Urethral Segments
💧 The two ejaculatory ducts penetrate the prostate gland and empty into the prostatic urethra.
📊 The urethra is divided into three regions: the proximal prostatic urethra, the membranous urethra passing through the pelvic girdle, and the distal spongy urethra passing through the penis (corpus spongiosum).

Key Points & Insights
➡️ Sperm production occurs in the seminiferous tubules, which feed into the Rete Testis network for collection.
➡️ The epididymis serves as the primary site for sperm maturation and motility development over roughly 20 days.
➡️ The sequence of transport ducts leading out of the body is: Efferent Ductules $\rightarrow$ Epididymis $\rightarrow$ Ductus Deferens $\rightarrow$ Ejaculatory Duct $\rightarrow$ Urethra.

📸 Video summarized with SummaryTube.com on Nov 25, 2025, 15:05 UTC