The epididymis is a comma

The epididymis is a comma - duct, the ductus deferens...

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The epididymis is a comma-shaped organ that lies adjacent to each testis. Each  of the two epididymides contains a tightly coiled tube, the ductus epididymis. Here,  sperm complete their maturation and are stored until ejaculation. During  ejaculation, smooth muscles encircling the epididymis contract, forcing mature  sperm into the next tube, the ductus deferens. The walls of the ductus epididymis  contain microvilli called stereocilia that nourish sperm. The ductus deferens (vas deferens) is the tube through which sperm travel when  they leave the epididymis. Each of the two tubes enters the abdominal cavity,  passes around the urinary bladder (refer to Figure 1), and together with the duct  from the seminal vesicle, joins the ejaculatory duct. Before entering the ejaculatory 
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Unformatted text preview: duct, the ductus deferens enlarges, forming a region called the ampulla. Sperm are stored in the ductus deferens until peristaltic contractions of the smooth muscles surrounding the ductus force sperm forward during ejaculation. The ejaculatory ducts are short tubes that connect each ductus deferens to the urethra. The urethra is the passageway for urine and semen (sperm and associated secretions). Three regions of the urethra are distinguished: The prostatic urethra passes through the prostate gland. The membranous urethra passes through the urogenital diaphragm (muscles associated with the pelvic region). The spongy (penile) urethra passes through the penis....
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