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|The Female Body Is Created In A Way To Block Weak Sperm (watch Video) by Dynamodale(m): 1:58pm On Feb 16, 2019|
The life of a sperm isn't easy. From cervix to egg, the female reproductive tract puts these tiny swimmers through an obstacle course of doom.
It's like being forced into a haunted house where the only way out is forward. At every turn there are more ways to die: bathed in acid, tangled in mucus, attacked by the immune system, flushed by the oncoming current, maybe even ensnared in a crypt.
It's a test not only of endurance, but also, as we are beginning to find out, of speed. Using models and computer simulations, a new study has found that only the most agile sperm can get themselves out of a tight spot.
When approaching a narrow juncture in the reproductive tract, like the opening from the uterus to the fallopian tubes, the oncoming current grows faster, allowing only the most worthy contestants through to the next stage.
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