Human sperm cells are seen attempting to swim right to left through an artificial stricture in this experiment headed by Alireza Abbaspourrad of Cornell University in New York. Photo: Alireza Abbaspourrad Human sperm cells are seen attempting to swim right to left through an artificial stricture in this experiment headed by Alireza Abbaspourrad of Cornell University in New York. Photo: Alireza Abbaspourrad
Human sperm cells are seen attempting to swim right to left through an artificial stricture in this experiment headed by Alireza Abbaspourrad of Cornell University in New York. Photo: Alireza Abbaspourrad
Medicine

This is how the female human body uses obstacles to block weak sperm, like salmon running into a waterfall

  • Only the best swimming sperm can make it though tight spots known as strictures that act like gates on the journey from cervix to egg

Topic |   Medicine
Human sperm cells are seen attempting to swim right to left through an artificial stricture in this experiment headed by Alireza Abbaspourrad of Cornell University in New York. Photo: Alireza Abbaspourrad Human sperm cells are seen attempting to swim right to left through an artificial stricture in this experiment headed by Alireza Abbaspourrad of Cornell University in New York. Photo: Alireza Abbaspourrad
Human sperm cells are seen attempting to swim right to left through an artificial stricture in this experiment headed by Alireza Abbaspourrad of Cornell University in New York. Photo: Alireza Abbaspourrad
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