How Sperm Meets an Egg to Fertilize a Fetus in The Mother’s Womb

This is how the sperm meets an egg until it is fertilized as a healthy fetus in the mother’s womb.

The egg swims through a 15cm long, narrow fallopian tubes before reaching the uterus. Its adjacent nutritional cells seem as though a beautiful ring that engulfs around it. Very soon, it will meet with the sperm to start the process of fertilization.

Approximately 5 million of sperms will swim through their final target- the egg that is hidden in the fallopian tube. These sperms have some tremendous forces and large in volumes, nevertheless, only one of them will achieve its mission by reaching the egg.

The outer layer of the egg is protected by a layer of transparent coating, which looks like a beautiful planet suspending in the universe. After crossing more bridges successfully, the sperms finally meet the egg. Nevertheless, the egg membrane becomes a hurdle for the sperms to pass through. At this moment, the sperms plunge their heads to drill deep into the membrane layer of the egg. Simultaneously, they hit their tails by swaying around the egg. Then, the egg follows gradually their tails’ movements in a counterclockwise direction to rotate around them.

This time, the sperms have their heads plunged into the egg. We can clearly see their middle and end parts that are revolving around the egg. They are just like rotating drills moving non-stop while flapping their tails by putting more efforts in order to squeeze through the centre of the egg.

After being fertilized for eight days, embryo completed its “landing” mission. It tries to embed itself into the endometrium (inner membrane of the uterus). This time, it starts to split into a few hundred of cells.

After having fertilized for nearly 6 weeks, human shape is formed. Its heart beat is 140 to 150 beats per minute. Its heartbeat is two fold of its mother’s.

This is a 10-week fetus developed in the mother’s womb.

This is a fetus that has developed within 11 weeks. During the forth month of the pregnancy, the fetus grows from 5cm to 10cm in length.

This is a four-month-and-a-half fetus in the mother’s womb. He moves his arms flexibly and he tends to place his finger near his lip to start sucking on it.

This is a 28-week fetus developed in the mother’s womb.

This 7-month fetus is sleeping quietly and peacefully in the mother’s womb. It looks like a tiny sleeping handsome prince.

The fetus has its legs clearly seen in the mother’s womb.

This is a charming look of the fetus in the mother’s womb.

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42 Responses to “How Sperm Meets an Egg to Fertilize a Fetus in The Mother’s Womb”
  1. Anne Lyken-Garner Says...

    On February 8, 2008 at 9:12 am

    I love the cute pictures of the fetuses. They make me broody.

  2. IcyCucky Says...

    On February 9, 2008 at 6:25 am

    Bring back memory…

  3. Judy Sheldon Says...

    On February 9, 2008 at 9:04 am

    Chan, this is such a touching article, wonderfully written and illustrated.

  4. Alexa Gates Says...

    On February 10, 2008 at 9:45 am

    great health lesson :)

  5. nobert bermosa Says...

    On April 29, 2008 at 12:18 pm

    nice article, this will be very helpful in explaining to kids how they came into being,

  6. Lucy Lockett Says...

    On April 29, 2008 at 7:47 pm

    How beautiful, protected and safe!

  7. yulia madjid Says...

    On July 5, 2008 at 11:15 am

    thanks for all information. actually I’m working in 9months free magazine in Jakarta, and if you don’t mind I will take the information and some of the photos with your permission. thankyou again..

  8. CHAN LEE PENG Says...

    On July 6, 2008 at 6:43 pm

    To Yulia Madjid,

    You’re strictly not allow to take the information and photo to publish in your magazine. Your intentions are to almost copy my article verbatim (word for word) and in any literary circle that is incorrect. I do not give you permission to do so.

  9. 1A2 Says...

    On July 22, 2008 at 7:23 am



  10. Trev Says...

    On August 31, 2008 at 1:17 pm

    intersting post, thank you =)
    could you say the author name of 4-th photo? is it a real microphotography and not drawn picture?

  11. MauJadi Says...

    On September 8, 2008 at 5:32 am

    God’s creation is such a beautiful thing.

  12. jHOy yAmbAo Says...

    On April 1, 2009 at 9:59 pm

    tnx 4 d iNfO.. acTuALLy im pregnant ryT nOw.. sO 2 oL d GirLs soOn 2 bE mOmmy Lyk mE.. cOngrAtZ aNd kEEp sAfE. gOdbLesS.. mwAH..

  13. sri Says...

    On May 6, 2009 at 7:10 am


  14. sri Says...

    On May 6, 2009 at 7:11 am


  15. sri Says...

    On May 6, 2009 at 7:13 am

    i love this bcaz i will become a mother i love thissssssssssss

  16. Deepthi Says...

    On May 7, 2009 at 1:29 am

    Excellent . it’s heart touching .


    On May 14, 2009 at 9:35 am

    wow this is touching

  18. wayne jr. Says...

    On May 14, 2009 at 11:18 am

    i dont a baby because i F.H.G.M

  19. darreen Says...

    On May 14, 2009 at 12:41 pm

    sex is cool i want to do it dogiestlye

  20. Dylan Osley Says...

    On May 19, 2009 at 1:53 pm

    this is a good web site it was use ful for health class.

  21. dick jhonsin Says...

    On May 19, 2009 at 1:55 pm

    awsom grafics dude

  22. aimee Says...

    On August 31, 2009 at 9:28 pm

    i really liked it it eas really interesting and at school we are learning about sex education and i am in grade 5

  23. eddie Says...

    On September 21, 2009 at 8:56 pm

    try to till that for people that supports Abortion.

  24. Jes Says...

    On October 19, 2009 at 6:35 am

    This is a good teory , just imagine this in your womb , it will really be fantastic.
    Those baby are really very cute in their mother womb and it’s always like that.

  25. rufii Says...

    On November 2, 2009 at 3:14 am

    very very informative

  26. kittycatgirl Says...

    On December 2, 2009 at 1:50 pm

    i love babyies sooooo much there so cute and cuddley to playy with!!!!! see ya poeple

  27. chel Says...

    On January 3, 2010 at 8:58 pm

    I can’t imagine how god so powerful….evrythimg is beatiful and very amazing.I luv kids they’re the reason why family get more stronger because of them.pls… stop abortion if u can’t handle it stop having fun in sex….they’re not a toy they’re human an angel from above.if u gonna keep them ur so bless and u will get or receive a good carma in life evem sometimes there’s some tough situation.

    God bless u.

  28. ramesh Says...

    On January 26, 2010 at 1:29 am

    this is not expected level
    pls send related video to my mail id

    this is my mail id

  29. nuri Says...

    On January 31, 2010 at 7:54 am

    very beautiful,kids may learen how real things work

  30. rajesh Says...

    On January 31, 2010 at 11:15 pm

    It is really excellent to know the mechanism of God

  31. GuestyLaroo Says...

    On February 7, 2010 at 6:35 pm

    Language FAIL.

  32. divya Says...

    On March 8, 2010 at 1:41 am

    very nice

  33. Denise, age 45 with two young boys Says...

    On April 26, 2010 at 10:30 am

    Really beautiful photographs, Chan Lee Peng. Thank you for sharing them here.

  34. ummufathia Says...

    On June 8, 2010 at 2:58 am

    chan lee peng… thankyou for your information.
    you\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’re very very smart person and very very humble
    your information open our eyes that God creation\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’s very very GREAT. SUBHANALLAH….

  35. Anna Says...

    On June 23, 2010 at 10:27 pm

    To Chan Lee Peng,

    Great article. Do you have a list of references or sources from which the information and photographs were acquired? I have seen these photographs and read similar text in other publications. Any reputable reporter would surely give credit where credit is due. Unbeknownst to me, you may be the original provider of this information. In that case, what are your credentials?


  36. CHAN LEE PENG Says...

    On June 24, 2010 at 12:21 am

    To Anna and all users,

    This article is under copyright of the author and no parts of it can be used in any form. You are only allowed to leave

    Thanks for understanding!

  37. naresh Says...

    On October 2, 2010 at 6:27 am

    great to see thiss and my mom kept me for 11months as d prince.thank u mom:)…. thank s not enough for u….guys keep ur moms safe and wit joy peace till his last breath>)

  38. fluffykitty Says...

    On January 5, 2011 at 8:16 pm

    i was my moms last child and proud of it i wish i had a baby brother though

  39. nancybabe Says...

    On April 1, 2011 at 5:50 am

    the article is cool. Pls i want baby .if there is anyother way i can try accept having sex during ovlation which i have been doing with my husband pls educate me.thanks

  40. vishu Says...

    On December 19, 2011 at 1:03 pm

    so sweet & really inocent

  41. Rishi Says...

    On March 25, 2012 at 2:28 pm


  42. iman airin az Says...

    On April 19, 2012 at 5:32 am

    Hi chan lee peng, what are valuable infrmtns ..,really appreciare it. For the time being i really wnt to get pregnant but litle bit confuse with an ovulution.

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