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The production of sperm by the epithelium proceeds in an orderly, cyclic fashion from the base of the epithelium' to its apex, as well as in a coordinated, wave-like manner along the length of the tubule. The epididymis is made up of several feet of long, thin tubules that are tightly coiled into a small mass. They divide mitotically and renew the gonial stem cell population. The sperm released during ejaculation must first swim through the vagina and uterus and into the fallopian tubes where they may find an oocyte.


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