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Thread: sperm and cilia [in the oviduct]

  1. #1 sperm and cilia [in the oviduct] 
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    While a sperm swims up to the vagina to the oviduct, there are cilia in the oviduct and that makes the sperm swim harder? Cilia don't help the sperm to pass along easily ,but in the opposite ,right?

    I'm just not sure, in the book it 's not clear.
    Thank you so much


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  3. #2  
    Forum Professor Zwirko's Avatar
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    Those cilia are probably there to move the egg down to the uterus, since it wouldn't be a good idea to have a fetus growing in the oviduct.


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  4. #3  
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    The cilia don't all swish in the same direction. On the ridges they beat towards the uterus, in the troughs they beat towards the ovaries; but overall and for non motile stuff like eggs the direction is what you'd expect. Possibly, sperm are surfing up the troughs and jumping the ridges until they chemically sense the egg nearby. I don't know if that really works to transport randomly motile sperm in the opposite direction of eggs... if sperm tend towards the walls (maybe seeking heat?) I imagine how it does.
    A pong by any other name is still a pong. -williampinn
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  5. #4  
    SHF
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    Note muscular contraction is important here both for sperm and oocyte. The sperms movement through the uterus and uterine tube is mostly by contraction of said structures not by the sperms swimming. The oocyte is also transported by muscular contraction of the tube (as well as movement of cilia)
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  6. #5  
    Time Lord
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    That's remarkably like the movement of plankton through beds of fanning mussels, while waves slosh back and forth.
    A pong by any other name is still a pong. -williampinn
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