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  1. #1
    sojustask's Avatar
    sojustask is offline The Late, Great Lady Mod - Retired User Rank
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    Man goes back 20 million years.

    Blame that bad back on your ancestors
    By Maggie Fox, Health and Science
    http://news.yahoo.com/s/nm/20070715/...ans_walking_dc

    WASHINGTON (Reuters) - A spine specialist trying to figure out why people so often have bad backs says he has come up with a new theory about when and how early humans evolved the ability to walk upright.

    The uncannily human-looking backbone of a 21 million-year-old precursor of humans and apes gives the first clue, said Dr. Aaron Filler of the Cedars Sinai Medical Center in Los Angeles.

    A major change in the vertebrae that allowed this pre-human to stand upright and carry things also made it easier to crush and strain the spongy discs between each vertebra, Filler, a medical doctor with a doctorate in anthropology proposes.

    That, in turn, explains why back pain is a leading cause of disability, he said.

    Writing in the journal Neurosurgical Focus on Sunday, Filler said one main clue was a bone feature called the transverse process, which sticks out from the side of the hollow, round vertebrae, Filler said in a telephone interview. This is where muscles attach to the spine.

    "The vertebra is transformed in a way that literally reverses the mechanics of the spine," Filler said. "The bone lever of the vertebrae gets switched from bending the spine forward to bending the spine back."

    Most vertebrates are oriented forward, to walk on all fours. The transverse process is at the front of each vertebra, facing the animal's belly. This is true of monkeys, too.

    But in humans and in the 21 million-year-old fossil of a creature called Morotopithecus bishopi, a tree-dwelling, ape-like creature that lived in what is now Uganda, the transverse process has moved backward, behind the opening for the spinal cord.

    Great apes, such as chimpanzees, share this feature.

    'THE UPRIGHT APE'

    The fossil was discovered in the 1960s but no one noticed the important change until 1997, when paleontologist Laura MacLatchy of the State University of New York at Stony Brook reported on the remarkable features of Morotopithecus.

    "That means that upright posture bipedalism goes back 20 million years, not just 5 or 6 million years," said Filler.

    In his study and in a book published last week called "The Upright Ape -- a new origin of the Species," Filler argues that this common ancestor, and ancestors going back many millions of years before, walked upright. Homo sapiens, the human species, continued upright, while apes evolved back toward all fours, he argues.

    "When you look at most ape species, their spines and most of their bodies still look pretty monkey-like," Filler said.

    He also said humans evolved a new structure of muscles that pull the body from side to side while standing.

    "This is very important for carrying an infant or child," Filler said. "From the point of view of back pain, now we have big muscles doing this heavy work that never did before. They can get torn and strained."

    The backward orientation also allows the cushiony discs to get crushed, Filler said. "In most animals the vertebrae get spread apart when they carry infants on their backs when on all fours," he said.

    What further differentiates humans from apes is the positioning of the place where the spine attaches to the hips, said Filler, who dissected the backbones of dead gibbons, chimpanzees and macaque monkeys and compared them to bones from living and extinct species of other animals and fossils from various pre-humans.


    .

  2. #2
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    Re: Man goes back 20 million years.

    Quote Originally Posted by sojustask
    Blame that bad back on your ancestors
    By Maggie Fox, Health and Science
    http://news.yahoo.com/s/nm/20070715/...ans_walking_dc

    WASHINGTON (Reuters) - A spine specialist trying to figure out why people so often have bad backs says he has come up with a new theory about when and how early humans evolved the ability to walk upright.

    The uncannily human-looking backbone of a 21 million-year-old precursor of humans and apes gives the first clue, said Dr. Aaron Filler of the Cedars Sinai Medical Center in Los Angeles.

    A major change in the vertebrae that allowed this pre-human to stand upright and carry things also made it easier to crush and strain the spongy discs between each vertebra, Filler, a medical doctor with a doctorate in anthropology proposes.

    That, in turn, explains why back pain is a leading cause of disability, he said.

    Writing in the journal Neurosurgical Focus on Sunday, Filler said one main clue was a bone feature called the transverse process, which sticks out from the side of the hollow, round vertebrae, Filler said in a telephone interview. This is where muscles attach to the spine.

    "The vertebra is transformed in a way that literally reverses the mechanics of the spine," Filler said. "The bone lever of the vertebrae gets switched from bending the spine forward to bending the spine back."

    Most vertebrates are oriented forward, to walk on all fours. The transverse process is at the front of each vertebra, facing the animal's belly. This is true of monkeys, too.

    But in humans and in the 21 million-year-old fossil of a creature called Morotopithecus bishopi, a tree-dwelling, ape-like creature that lived in what is now Uganda, the transverse process has moved backward, behind the opening for the spinal cord.

    Great apes, such as chimpanzees, share this feature.

    'THE UPRIGHT APE'

    The fossil was discovered in the 1960s but no one noticed the important change until 1997, when paleontologist Laura MacLatchy of the State University of New York at Stony Brook reported on the remarkable features of Morotopithecus.

    "That means that upright posture bipedalism goes back 20 million years, not just 5 or 6 million years," said Filler.

    In his study and in a book published last week called "The Upright Ape -- a new origin of the Species," Filler argues that this common ancestor, and ancestors going back many millions of years before, walked upright. Homo sapiens, the human species, continued upright, while apes evolved back toward all fours, he argues.

    "When you look at most ape species, their spines and most of their bodies still look pretty monkey-like," Filler said.

    He also said humans evolved a new structure of muscles that pull the body from side to side while standing.

    "This is very important for carrying an infant or child," Filler said. "From the point of view of back pain, now we have big muscles doing this heavy work that never did before. They can get torn and strained."

    The backward orientation also allows the cushiony discs to get crushed, Filler said. "In most animals the vertebrae get spread apart when they carry infants on their backs when on all fours," he said.

    What further differentiates humans from apes is the positioning of the place where the spine attaches to the hips, said Filler, who dissected the backbones of dead gibbons, chimpanzees and macaque monkeys and compared them to bones from living and extinct species of other animals and fossils from various pre-humans.
    .

    At what point or location in time in the evolutionary chain did 'man' become sinners that required a Savior?

    You did say that if you didn't believe in John 14:6, then you weren't a 'Christian', and you did claim to be one - that is what you said.


    But if the Bible is full of lies, which is also what you claim - then how do you know if John 14:6 is true?


    ***

    You posted this article as if you believed it by faith. If the Bible is full of lies written by men, then can these scientists - who are also men - also be biased with their flawed carbon-dating and argon-dating machinery?




    Hey, if you believe in evolution as true, if you don't believe Adam and Eve existed...
    ...if you believe that the Bible is full of lies (cannot be trusted, nor is it authoritative)...
    ...if you believe that there are many paths to 'God' (other than through the 'Son')....

    and yet claim to be a 'child of God'...



    I just want to see how you'll answer (with kindness). This is a debate website, of course.

  3. #3
    coontie is offline Vashudeva; Ferryman - doing the work... User Rank
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    Re: Man goes back 20 million years.

    Interesting item. Just goes to reenforce the idea that there are always trade-off, compromises required when one thing is established over another previous circumstance.
    I have been very fortunate, my back has held up very well. I suppose, getting past generializations that some of us are more genetically predisposed to better physical and mental performance than others. Of course, there is nothing 'straight down the line'.
    The physical body of many today is in a state of serious decline due to some individuals sitting, lying too much, riding vehicles and other conveyances, where the trip is short and they could walk. There is an idea that leisure should somehow totally allow for as little exercise to maintain fitness of the physique.
    It follows and the doctors say: use it or lose it!

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