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Author Topic: How fast do sperm swim?  (Read 8288 times)

Lissa Rankin

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How fast do sperm swim?
« on: 29/10/2009 19:30:03 »
Lissa Rankin asked the Naked Scientists:
   
I am writing a book "What's Up Down There? Questions You'd Only Ask Your Gynaecologist if she was your best friend" (St. Martin's Press, 2010).

One of the questions submitted was "How fast do sperm swim?" 

Your site lists 3 mm/hr as the speed. Do you have a source for that? I'd love help finding the answer! Thank you.

Lissa Rankin, MD

What do you think?


 

Offline FuzzyUK

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How fast do sperm swim?
« Reply #1 on: 30/10/2009 22:43:36 »
Quote
One of the questions submitted was "How fast do sperm swim?"

It depends whether you are in the swimming pool or in bed at the crucial moment.
 

Offline chris

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How fast do sperm swim?
« Reply #2 on: 01/11/2009 10:41:59 »
Here's an evidence-based answer from our own site:

http://www.thenakedscientists.com/HTML/content/questions/question/1700/

- Having looked at a range of sources, and a range of animals, the consensus would appear to be up to 5mm per minute (not per hour - I'm not sure where that came from).

Chris
 

Offline thedoc

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Devin

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« Reply #4 on: 23/01/2010 00:34:28 »
Sperm do not "quite literally" "follow their noses". They do not have noses. Such antrhopomorphism is part of why the medical profession failed to understand fertility for so long.

Also, they do not "find the egg" on their own. Cillia within the fallopian tubes and on the uterine walls pull the sperm toward the egg.

It is male chauvinism which renders the inaccurate picture of "mighty sperm swims toward passive egg." That picture is scientifically false and the product of sexism.
 

Jesse W

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« Reply #5 on: 10/03/2010 14:28:25 »
I would like to correct the scaling factor that he offers.  If a salmon is 50 cm long and he is traveling at five body lengths per second, then that scales up to 9km/h or 5.6mph.  Actually, body lengths per second is near universal factor that is constant with body size. As you can see that holds for sperm too.  Though this may vary up to an order of magnitude.
 

Lynne

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« Reply #6 on: 25/04/2013 20:36:43 »
This is very, very old information.  
Sperm are not capable of locating or recognizing an egg - the egg finds the sperm and chooses one to pull in.

https://studentportalen.uu.se/access/content/group/uusp166414/The%20Egg%20and%20the%20Sperm.pdf
 

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« Reply #6 on: 25/04/2013 20:36:43 »

 

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