In case you've ever wondered what connects your intestine to your abdomen, there's a word -- and now, a single organ -- for that: the mesentery. But don't worry; you haven't grown a new organ. It's always been there, performing important functions that affect systems throughout the body, from cardiovascular to immunological.
Daily science facts:
Researchers have classified a brand-new organ inside our bodies.Although we now know about the structure of this new organ, its function is still poorly understood, and studying it could be the key to better understanding and treatment of abdominal and digestive disease. Known as the mesentery, the new organ is found in our digestive systems, and was long thought to be made up of fragmented, separate structures. But recent research has shown that it's actually one, continuous organ.
So what is the mesentery?
It's a double fold of peritoneum - the lining of the abdominal cavity - that attaches our intestine to the wall of our abdomen and keeps everything locked in place.
Follow us on @chemiwiz for daily news feed..!!
Please sign up to be an organ donor if you haven't already. You can give some or all of your organs and can change your mind at any time, it's your choice. Tell your family and friends about your decision. You can also choose for your organs to be used for research if they are not suitable for transplantation. Please help save lives. #yesiDOnate#organdonor#organdonation#soimportant#love#neworgan#life#giftoflife
Diese Nachricht spukt jetzt schon seit ein/zwei tagen im Netz herum. Es soll ein neues Organ geben - das Mesenterium! Tatsächlich! Diejenigen unter euch, die schon einmal das Glück hatten einen Bauchraum anzugucken, wissen, dies ist keine neue Struktur! Sondern eine Struktur die einen ziemlich offensichtlich anlacht und einfach unübersehbar ist. Sogar die Tagesschau berichtet, dass Leonardo da Vinci die Struktur schon um 1508 gezeichnet hat! Also was ist nun neu daran? Die Forscher um Calvin Coffey möchten es nun als ein 'Organ' bezeichnen und sehen das Mesenterium (das mit dem Dünndarm verbunden ist) und das Mesocolon (das mit Teilen des Dickdarmes verbunden ist) als eine Struktur.
Schön, dass jetzt mehr Forschung betrieben werden soll am Mesenterium und der Funktion. Aber neu ist es ganz sicher nicht.
Is everyone excited to hear we have a new organ!!?First let's define organ. An organ is considered one or more types of cells that form tissue. When this tissue forms a structure and has a function it is called an organ. When these organs work together it is called an organ system. This is Biology 101. As of right now there are 78, now 79 named organs in the body. Many of the organs are things even I would not consider an organ such as the ureters. To me ureters are just accessories to the kidney and bladder organs- but technically because of their structure, they are considered an organ. Just like the vagina, teeth and arteries that most people (including myself) do not consider "organs". Ok so let's talk about this "new" organ, the mesentery. The mesentery is not new people. Let's talk about the mesentery and it's function prior to the news this week. The aorta is the largest artery in the body. It leaves the heart and makes a loop going all the way down the spinal column. The function of the aorta is to bring oxygenated blood to all of the organs of the body (so this is technically an organ as well- but I have always considered it an assistant to the heart rather than an organ itself. So supply oxygen to a majority of the small and large bowel, a branch comes off the aorta called the SMA or superior mesenteric artery (red). This big artery then branches off in to many tributaries that reach each portion of a majority of the small and large bowel. Because these arteries are free flowing in the abdomen they are surrounded by fat which protects them and cushions them. This fat also anchors the bowel in place. This fat which contains the mesenteric arteries along with veins, nerves and lymphatics is called the "mesentery". So is it new? Nope. It's always been there and has always been an important structure. By definition it is now considered an "organ" because of microscopic studies done on the layers of the mesentery. This may have important implications in surgery (although I'm not sure what) but it definitely will not be handled any differently in autopsy and surgical pathology for dissection and diagnostic purposes because the function is already known.