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Scientists Identify New Organ In Humans (livescience.com)

Scientists have classified a new organ called the mesentery, which connects a person's small and large intestines to the abdominal wall and anchors them in place, according to the Mayo Clinic. Until recently, it was thought of a number of distinct membranes by most scientists. It was none other than Leonardo da Vinci who identified the membranes as a single structure, according to a recent review. Live Science reports: In the review, lead author Dr. Calvin Coffey, a professor of surgery at the University of Limerick's Graduate Entry Medical School in Ireland, and colleagues looked at past studies and literature on the mesentery. Coffey noted that throughout the 20th century, anatomy books have described the mesentery as a series of fragmented membranes; in other words, different mesenteries were associated with different parts of the intestines. More recent studies looking at the mesentery in patients undergoing colorectal surgery and in cadavers led Coffey's team to conclude that the membrane is its own, continuous organ, according to the review, which was published in November in the journal The Lancet Gastroenterology and Hepatology. The reclassification of the mesentery as an organ "is relevant universally as it affects all of us," Coffey said in a statement. By recognizing the anatomy and the structure of the mesentery, scientists can now focus on learning more about how the organ functions, Coffey said. In addition, they can also learn about diseases associated with the mesentery, he added.

21 of 112 comments (clear)

  1. Time for new textbooks that will be $250 each! by Joe_Dragon · · Score: 4, Insightful

    Time for new textbooks that will be $250 each!

    1. Re:Time for new textbooks that will be $250 each! by slew · · Score: 3, Informative

      Time for new textbooks that will be $250 each!

      Yet only $195.27 on amazon ;^)

      Of course the infamous Gray's Anatomy is published by the "respected" Elsevier company...

      All editors quit top linguistics journal to protest Elsevier pricing
      Elsevier going after authors sharing their own papers
      More fake journals from Elsevier

    2. Re:Time for new textbooks that will be $250 each! by Anonymous Coward · · Score: 2, Funny

      Time for new textbooks that will be $250 each!

      Unfortunately i am Greek, so i can't afford it - but fortunately... i am Greek!

      "mesentery": compound word from Greek "meso" ("middle") and Greek "entero" ("bowel")

    3. Re:Time for new textbooks that will be $250 each! by ProzacPatient · · Score: 4, Funny

      Of course the infamous Gray's Anatomy is published by the "respected" Elsevier company...

      But the real question is it any better than the TV show? In regard to adaptions, people usually say the book is better.

  2. Well, not "new" by ihaveamo · · Score: 4, Funny

    I think it's more "Scientists identify overlooked organ". Pity..... "New" would have been cool, in an X-MEN sort of way.

    1. Re:Well, not "new" by Anonymous Coward · · Score: 3, Insightful

      "Yeah, it's kind of like referring to the skin as an organ. It's technically correct (the very best kind of correct!), but you're not really in possession of any significant new knowledge."

      Actually, maybe not significant new knowledge, but new understanding...
      I remember the whole "Is the Skin an Organ?" debate in Freshman Physiology many decades back. Back then, the word "Organ" had a different generally accepted meaning, that of a unique part of the body that had at least one defined and continuing functional organic characteristic. Bone Marrow were Organs, Bones were not. Tonsils were Organs, Uvula were not. Skin... well it was protective, but as long as that was all that it was, it was just like Bones, and Cartilage, and Earlobes. But skin also Sweat, which aided in temperature regulation, elimination of waste, and maintaining Electrolyte balances. So Skin is an Organ. But it is actually the Sweat Glands in Skin that perspire; Skin just carries them around. So Skin is not an Organ.
      The problem with the Mesentery is that it just holds bits of gut in place, on first glance. It produces no Hormones or Enzymes, or Blood cells. It does not ward off disease. It does not engage in the Metabolism of the Gut. It does not have Sexual characteristics... or if it does, we prefer not to think about it. But it's a bit more complicated than that. It contains other defined tissue that _does_ do some of these things. Lymphatic tissue for instance. Unlike the Liver, if the Mesentery is removed, the patient doesn't die. They may be uncomfortable, but that's it. Be careful bending over. But the same may be said for Tonsils, which most definitely are Organs.
      So the problem isn't whether the Mesentery is an Organ or not, it's that we've gotten very confused about what an Organ actually is. Oh, easy for Leonardo...
      If everything, including some Bones which in themselves are essentially Dead, but because they contain Marrow, are classified as Organs, then the word has lost any real meaning.
      So maybe it's time that we just got rid of the damn word completely. We do quite well without Melancholies and Humours, Homunculi, and Phlogiston, and Mal-Aire, old once well-accepted Medical terms. There will be those who object; look at how that whole light-hearted affair about Pluto turned out. We may be accused of Dis-Organized Crime...

  3. New Organ by TheOuterLinux · · Score: 2

    So, did the value of my Grey's Anatomy book go up or down? Fingers crossed.

  4. Marvel of Engineering by Neuronwelder · · Score: 2

    Indeed! We really don't have just one brain. We already know that the spine itself reacts like a brain and near your solar plexus is a junction of nerves that processes more information. The eyes pre-process and sort information before it ever gets near the brain. Unfortunately I haven't researched it for years and retroactive amnesia has set into my brain.

    1. Re:Marvel of Engineering by cfalcon · · Score: 5, Funny

      > retroactive amnesia has set into my brain

      All of them?

  5. That ain't nuthin' by hyades1 · · Score: 4, Funny

    I lost about 35 pounds and discovered an organ I hadn't seen in so long I thought it was a myth.

    Also, that I have two feet attached to my toes.

    --
    I've calculated my velocity with such exquisite precision that I have no idea where I am.
  6. You are now breathing manually. by TroII · · Score: 4, Funny

    You have died of mesentery.

  7. I for one welcome by Anonymous Coward · · Score: 3, Funny

    I for one welcome our new intestinal innerlords.

  8. What's the ordinary joe's word? by tietokone-olmi · · Score: 5, Funny

    Can we name it the semicolon?

    1. Re:What's the ordinary joe's word? by Tablizer · · Score: 4, Funny

      Can we name it the semicolon?

      So that's what's causing the pain in my asterisk.

      At first I thought it was the high-percent caret diet, which resulted in punctuated dashes at the restroom, clogging the pipes and interrupting my period, which is a plus, by the way. You can quote me on that.

      But it almost put me in a comma. However, this research without question underscores and pounds home the real cause!

  9. Re:Labels by DamnOregonian · · Score: 2

    Saurischians are dinosaurs, dinosaurs are saurischians. Birds are saurischians. Birds are dinosaurs.
    Since the publication of The Origin of Species, and the flurry of evolutionary classification that took off after it, birds have been recognized as some kind of Archosaur or another. Birds have always been known to have been dinosaurs.

  10. Damn, the one thing I was going to get to keep by Godwin+O'Hitler · · Score: 2

    ...when they harvest all the rest of my organs by default.

    --
    No, your children are not the special ones. Nor are your pets.
  11. Re: "Leonardo da Vinci who identified" by Dunbal · · Score: 5, Interesting

    Not only that I but distinctly remember studying the mesentery and its functions in medical school when I was there over 20 years ago... although it may not have been specifically granted the name "organ", that's not really how medical students classify things anyway. Organ simply means a collection of tissues performing a specific function or functions. You're far more likely to get a question asking about those functions, or where the blood supply comes from, or what embryological layers went into forming this structure on any test at medical school than "is this an organ?". We've known for a long time that the mesentery has quite a few functions from immune system functions (the thing is FULL of lymph nodes as anyone who has ever had adenitis mesenterica will testify) to being able to move through chemotaxis towards and plug any leaks in the bowel.

    --
    Seven puppies were harmed during the making of this post.
  12. No new Organs by Oswald+McWeany · · Score: 2

    There are no new organs in my colon thank you very much.

    --
    "That's the way to do it" - Punch
  13. I too have identified a new organ by bsdasym · · Score: 2

    It's called the "gut." Previously this organ was believed to be a series of smaller independent organs and tissues, but I've decided otherwise. Where's my Nobel Prize.

  14. New organ nothing. by Khyber · · Score: 2

    They merely discovered that it was fully connected instead of segmented.

    Anyone that's read the older First Responder coursebooks from 20+ years ago knows this thing exists in humans. WONDERFUL pictures of shattered bowels and mesentery all throughout the book.

    --
    Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
  15. Pluto Debate of the Anatomy World? by Koreantoast · · Score: 2

    Sounds like the Pluto debate of anatomy - is it an organ or a mere set of membranes?