Natural conception (or fertilization) requires sexual intercourse between a male and female. Healthy men typically release around 300 million sperm into the vagina during ejaculation. Sperm are the male gamete (reproductive cell) and have pinched, oval-shaped heads. A sperm swims using a flagellum tail that continuously whips back and forth. Despite this ideal structure, about 60% of sperm are imperfect even in the healthiest men. Many have multiple tails, are unable to move, or are otherwise defective. These sperm never escape the vagina, destroyed by its acidic 4.5 pH within hours. Their more successful siblings head toward the cervix.
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Showing posts with label conception. Show all posts
Showing posts with label conception. Show all posts
Friday, June 17, 2011
Conception
Brace yourself: it’s time for The Talk. Today on learnalittle, clear up those misconceptions about conception.
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