Tag: Human reproduction

Blogs

Sperm Use Secret Corkscrew Power to Turbocharge Their Swim

When we learn about “the birds and the bees,” we’re taught that after heterosexual intercourse, sperm swim up through the vagina, past the uterus, and into the fallopian tube, where one fertilizes an egg released by the ovaries. It turns out, however, that sperm aren’t just leisurely swimming—they’re racing through the female reproductive tract, propelled […]

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