Structure
There are two ducts, connecting the left and right epididymis to the ejaculatory ducts in order to move sperm. Each tube is about 30 centimeters long (in humans) and is muscular (surrounded by smooth muscle). Its epithelium is lined by stereocilia.
They are part of the spermatic cords.
Read more about this topic: Vas Deferens
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—James Madison (1751–1836)
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—Friedrich Nietzsche (1844–1900)