Wednesday, July 22, 2009

Chapter 6: The Best Laid (Body) Plans

6 comments:

  1. this chapter was interesting. i never knew that we were a tube within a tube when we are in the wome. also, i didn't know that we have three germ layers that determain wahat they build inside of us. i thought that is was very weird in a sense. when i read germ layer, i thought that is was bad to us not something good.

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  2. It was weird reading about us humans being a tube within a tube but I understand why we are a tube within a tube.
    -Ashley Vargas

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  3. i knew that during conception some women might be unlucky and their egg implants itself in the fallopian tubes instead of the uterus. I didnt know that mucus is what blocks the passage way where the egg is supposed to flow down from.

    -Love Martinez

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  4. In this chapter, I was awestruck when I found out we are made from three germ layers. I mean, three tiny little layers making a whole human? It sounds impossible. I really liked how Shubin described the way that all the cells joined together. I never really thought about there being a "glue" that holds us together. I guess I just pictured our bodies as a kind of puzzle where all of the pieces just connect. All of the tissue- grafting experiments and how they transform a cell or whole creature is definitely something I would like to learn more about later on.
    -Morgan Wininger

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  5. this book continues to amaze me in the way it challenges your mind to accept new concepts, like the fact that something as complex as a human can start from three very small "germ" layers, that form the tube within a tube, that is destined to form an embryoand that every creatures organs, (like a chicken heart and a pig heart) come from the same germ layer, which as the book points out is highly significant.

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  6. So I never thought that most animals from salamander to chicken would look similar during their development. Sure, they must start somewhere but you can never be sure what it looks like at that point. I didn't think of the maturation of an embryo to a baby so in depthly before, or that every organ forms from on of the three germ layers. All that Shubin illustrates really puts into perspective how we came to be.
    -Loremae Mopera

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