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the marvelous opposable thumb

Discussion in 'Channel Zero' started by ubejinxed, Apr 9, 2004.

  1. ubejinxed

    ubejinxed 12oz Veteran Member

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    the marvelous opposable thumb

    Discussion started by ubejinxed - Apr 9, 2004

    don't oppose this thumb buddy.

    http://www.abc.net.au/triplej/melandcharlie/photo/thumbw2.jpg'>

    so useful, i always think what wonderful ingenously designed things we possess. (unlike my retahded dual bathroom faucets that are either hot or cold)

    i was just pondering my thumb the other day as i was hanging a couple grocery bags off em and thought i'd find out more about my familiar friend the thumb

    In human anatomy, the thumb is the first digit on a hand. The human thumb is fully opposable to the tips of the other fingers in that it may position itself, and be folded inward, toward the rest of the hand and fingers, if so required. It rotates at the carpometacarpal joint and so can complete the sometimes quite delicate task of grasping objects by pressing them against the rest of the hand or finger(s).



    Evolution
    The opposable or prehensile thumb is usually associated with the evolution of homo habilis, the forerunner of homo sapiens (the human being of today). This, however, is the result of evolution from homo erectus (around 1 million years ago) via a series of intermediate anthropoid stages, and is therefore a much more complicated link.

    A discussion of primate characteristics is often included during units on human evolution. One of the characteristics most often identified as being typically primate and having played a role in human evolution is the opposable thumb. It is argued that the eye-hand coordination made possible by both stereoscopic vision and a grasping hand permitted primates to exploit arboreal habitats in a more efficient fashion. That same hand is used by humans today to manipulate tools and, in turn, the environment with a great deal of dexterity.

    The most important factor leading to the habile hand (and its thumb) is the freeing of the hands from their walking requirements - still so crucial for apes today, which in its turn was one of the consequences of the gradual pithecanthropoid and anthropoid adoption (hunh?) of the erect bipedal walking gait - and the simultaneous development of a larger anthropoid brain in the later stages.


    Many animals, primates and others, also have some kind of opposable thumb or toe:

    Panda - Panda paws have five clawed fingers plus an extra bone that works like an opposable thumb. This "thumb" is not really a finger (like our thumb is), but an extra-long wrist bone that works like a thumb.

    Koala - opposable toe on each foot, plus two opposable digits on each hand
    Opossum - opposable thumb

    Cebids (New World primates of Central and South America) - some have opposable thumbs

    Bornean Orangutan - opposable thumbs so that its forefeet are really like hands. The interdigital grip gives them the ability to pick fruit. They also have an opposable big toe.



    this aint your areavge handshake no sir
    [img]http://images.dpchallenge.com/images_challenge/16/1747.jpg'>

    [img]http://www.cctg.org/news/experiences/DSC00010.jpg'>

    [img]http://www.symphony-homes.com/boy%20thumbs%20up.jpg'>
     
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  2. ubejinxed

    ubejinxed 12oz Veteran Member

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    ubejinxed - Replied Apr 9, 2004

    http://masked-rider.m78.com/d010210/thumbs%20up.jpg'>
    [img]http://www.sit.wisc.edu/~tkd/images/photos/scott-ganesh-thumbs-up.jpg'>
    [img]http://www.hanz.be/mail/thumbs-up.jpg'>
    [img]http://www.coleraintwp.org/chair%20vb%20thumbs%20up.jpg'>
    [img]http://www.neurobellum.com/magicteam/art/thumbs%20up%20looking%20at%20you.jpg'>
    [img]http://www.spencer-for-hire.com/pics/Wedding/thumbs%20up%20limo.jpg'>
    [img]http://www.myc.org/Fun%20Pictures/2002/021004-thumbs-up.jpg'>
     
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  3. ubejinxed

    ubejinxed 12oz Veteran Member

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    ubejinxed - Replied Apr 9, 2004

    can i tell you something ricardo? i really like your signature i have a serious thing for tanned pool boys, would you like a glass of lemonade?why did you add it?

    i use my thumb for carrying groceries, pushing the space bar, pinching things and much more, how about you?
     
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  4. !@#$%

    !@#$% Moderator Crew

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    !@#$% - Replied Apr 9, 2004

    two months ago i used my thumb so much doing DNA sequencing, i got mild carpal tunnel.

    http://www.joangood.com/images/rnd/thimblefluted.jpg'>

    and don't forget about this
    [img]http://www.12ozprophet.com/ubb/icons/icon26.gif'>
     
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  5. ubejinxed

    ubejinxed 12oz Veteran Member

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    ubejinxed - Replied Apr 9, 2004

    that's a pisser, get some workmans comp buddy.

    and the weekend u mentioned is A-ok
     
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  6. ubejinxed

    ubejinxed 12oz Veteran Member

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    ubejinxed - Replied Apr 9, 2004

    :)
     
    ubejinxed - Rank: 12oz Veteran Member - Messages:
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  7. ubejinxed

    ubejinxed 12oz Veteran Member

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    ubejinxed - Replied Apr 9, 2004

    i'm ok, but thank you for your generous offer.
     
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  8. Overtime

    Overtime Dirty Dozen Crew

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    Overtime - Replied Apr 9, 2004

    rad ass thread actuallly
     
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  9. ubejinxed

    ubejinxed 12oz Veteran Member

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    ubejinxed - Replied Apr 9, 2004

    come on people lets talk about thumbs!
     
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  10. Telo

    Telo 12oz Elite Member

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    Telo - Replied Apr 9, 2004

    I never really though about it but my thumb is extremely important. I should take better care of it.

    Thumbs up for thumbs.

    [​IMG]
     
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  11. Devilush

    Devilush 12oz Legend

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    Devilush - Replied Apr 9, 2004

    i have double jointed thumbs!

    yay for thumbs.

    [​IMG]
     
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  12. adderall

    adderall 12oz Elite Member

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    adderall - Replied Apr 9, 2004

    thumbs are tight

    i wish i had 2 extra hands..
    so i could give those titties four thumbs down!
     
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  13. Weapon X

    Weapon X 12oz Loyalist

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    Weapon X - Replied Apr 9, 2004

    This thread is a little too weird for me. But yeah, those hot and cold separate faucets are really stupid. What made you get one of those? Or did it come with the place?
     
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  14. Weapon X

    Weapon X 12oz Loyalist

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    Weapon X - Replied Apr 9, 2004

    I almost broke my thumb going into the Skydome the other day. I was the first fan into the stadium (I like to go early for batting practise) and while my thumb was still in the door handle, some old lady jerked it open and I let out a yelp of pain. I would have grabbed her purse and beat her over the head with it for being so thoughtless. *but I didn’t, I assure you.
     
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  15. ubejinxed

    ubejinxed 12oz Veteran Member

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    ubejinxed - Replied Apr 9, 2004

    what's so strange about the thread? i think thumbs are cool! except maybe when old ladies hurt them
     
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