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Sperm Motility


In humans, roughly 300 million spermatozoa on average are ejaculated in the female reproductive tract, but only about one of every million actually enters the Fallopian tube. Upon entry, these spermatozoa apparently bind strongly to the oviductal epithelium in the isthmus, forming a sperm storage site.  Human spermatozoon formed in the testes via spermatogenesis is morphologically complete but functionally immature and incapable of fertilizing an egg. Spermatozoa to become fertile must u...




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