Saturday, 23 February 2013

3.10 describe the role of the placenta in the nutrition of the developing embryo

The embryo can't breath, digest or excrete.
Blood vessels inside the placenta can absorb the digested food molecules and oxygen that the embryo needs to survive. Waste products will be taken out of the embryo and put back into the mothers blood stream for her to excrete.
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6 comments:

  1. yalasiva2 June 2015 at 23:50

    from mother’s blood;
    diffusion / high conc. to low conc.;
    large surface area / thin / eq;
    **umbilical cord; ***

    ReplyDelete
  2. anuj patel17 January 2016 at 03:56

    hi this is anuj patel and i want to thank you for making this. safe yeh

    ReplyDelete
  3. Anonymous6 April 2016 at 00:38

    anuj is a penith.

    ReplyDelete
  4. Unknown26 April 2017 at 13:16

    bravo, old chap.

    ReplyDelete
  5. Mike Tsang26 June 2017 at 03:28

    The Biology Syllabus has changed…

    Here is a New blog for the 2017 Syllabus:

    http://igcse-biology-2017.blogspot.hk

    ReplyDelete
  6. SophieRice26 June 2017 at 18:51

    more at

    http://igcse-biology-notes.blogspot.hk/2017/06/310-describe-role-of-placenta-in.html

    ReplyDelete

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