dalo3a zoje
dalo3a zoje
لا يمكنك مشاهدة هذا التعليق لانتهاكه شروط الاستخدام.
Conjoined twins are identical twinshttp://en.wikipedia.org/wiki/Twin#Identical_twins whose bodies are joined in utero. It is a rare phenomenon; it is estimated to range from 1 in 50,000 births to 1 in 200,000 births, with a somewhat higher incidence in Southwest Asia and Africa. Approximately half are stillborn, and a smaller fraction of pairs born alive have abnormalities incompatible with life. The overall survival rate for conjoined twins is approximately 25%.
About 70% to 75% of conjoined twin pairs are female.
Conjoined twins form in one of two ways. The first is fission, in which the fertilized egg splits partially, resulting in two-to-one type conjoined twins, i.e. Dicephalus twins. The second is fusion, a more common type of conjoined twinning, in which a fertilized egg completely separates, but stem cells (which search for similar cells) find like-stem cells on the other twin and fuse the twins together. This results in single and relative organ sharing, i.e. Thorapagus twins.
Perhaps the most famous pair of conjoined twins was Chang and Eng Bunker (18111874), Chinese brothers born in Siam, now Thailand. They traveled with P.T. Barnum's circus for many years and were billed as the Siamese Twins; due to their fame and the rarity of the condition, the term came to be used as a synonym for conjoined twins, although in recent years the term has fallen out of favor and is considered a pejorative term. Chang and Eng were joined by a band of flesh, cartilage, and their shared liver at the torso. In modern times, they could have been separated easily.
Types of conjoined twins
There are several different types of conjoined twins:
· Diplopagus: Conjoined twins joined equally with near complete body, only sharing a few organs.
· Heteropagus: Conjoined twins joined unequal usually resulting in a parasitic twin.
· Thoracopagus: Bodies fused in the thorax. The heart is always involved in these cases; when the heart is shared, prospects for a long life, either with or without separation surgery, are poor (35-40% of cases).
· Omphalopagus: Joined at the lower chest. The heart is not involved in these cases but the twins often share a liver, digestive system, diaphragm and other organs (34% of cases).
o Xiphopagous: bodies fused in the xiphoid cartilage, e.g., Chang and Eng
· Pygopagus (iliopagus): Joined, usually back to back, to the buttocks (19% of conjoined twins).
· Cephalopagus: Heads fused, bodies separated. These twins generally cannot survive due to severe malformations of the brain. Also known as janiceps (after the two-faced god Janus) or syncephalus.
o Cephalothoracopagus: Bodies fused in the head and thorax. In this type of twins, there are two faces facing in opposite directions, or sometimes a single face and an enlarged skull. These twins also generally cannot survive. (Also known as epholothoracopagus or craniothoracopagus.)
· Craniopagus: Skulls fused, but bodies separate (2%).
o Craniopagus parasiticus: A second bodiless head attached to the head.
· Dicephalus: Two heads, one body with two legs and two, three, or four arms (dibrachius, tribrachius or tetrabrachius, respectively.) Abigail and Brittany Hensel, 17-year-old conjoined twins from the United States, are of the dicephalus tribrachius type, with their third arm having been removed while they were very young.
· Ischiopagus: Anterior union of the lower half of the body, with spines conjoined at a 180° angle (6% of cases). Or with the spines separate but both the pelvises forming a single big ring which includes two sacrums and two pubic symphyses.
· Ischio-omphalopagus: The most well known type of conjoined twins. The Twins are conjoined with spines in a Y-shape. They have four arms and usually two or three legs. These cases can be challenging because the twins often share reproductive and excretory systems.
· Parapagus: lateral union of the lower half extending variable distances upward, with the heart sometimes involved (5% of cases).
· Diprosopus: One head, with two faces side by side.
In some cases, parts of the brain have been known to be shared between conjoined twins joined at the head.
Occasionally one of the twins will fail to develop properly, effectively acting as a parasite upon the normally developed twin: this condition is known as parasitic twinning or heteropagus twins. One twin may absorb the other, which is known as inclusion twinning.
Natural death of the twins can occur within hours or a few days.
Separation
Surgery to separate conjoined twins may range from relatively simple to extremely complex, depending on the point of attachment and the internal parts that are shared. Most cases of separation are extremely risky and life-threatening. In many cases, the surgery results in the death of one or both of the twins, particularly if they are joined at the head. Saudi Arabia holds the most successful separation rate. The U.A.E. currently has the lowest success separation rate.
dalo3a zoje
dalo3a zoje
حبيبتي الدلوعة عندي الثلاث مواضيع هذي بس اباهم اليوم يخلصون. Some friends are coming to your house for lunch next Friday. You want to invite your Italian friend. Write a card to send to him/her. In your card, you should:  invite him/her to lunch  tell him/her who is coming  suggest how to get there 2. This is part of a letter you receive from an English-speaking friend. You said in your last letter that you won something in a raffle. What did you win? Write and tell me all about it”.  Write to your friend telling him/her where the raffle was, what you won and how you felt  First, use the table below to help you plan.  Write about 100 words, using paragraphs. 3. This is part of a letter you receive from an English-speaking friend. ‘Last time you wrote you said you planned a special day out. Where did you go? Write and tell me all.’ about it.’  Write a letter to your friend.  Write about 100 words.  Use the table below to help you plan. حبيبتي الدلووووووووووووووووووووووووعة أشكرج جزيل الشكر على تعاونج معنا والله يرزقج كل خير ويفرج عليج كل هم ان شاءالله مثل ما فرجتي علينا ويحفظلج زوجك وعيالك. آآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآآمين. حبيبتي الدلوعة عندي project واباج اتساعديني وبصراحة انا مستحية منج مابي أثقل عليج هل انتي فاضية تجدرين اتساعديني فيه. تحياتي
حبيبتي الدلوعة عندي الثلاث مواضيع هذي بس اباهم اليوم يخلصون. Some friends are coming to your...
أمين يا رب العالمين يا قلبي الله يسمع منك
أبد قوليلي ايش عندك project و انا ان شاء الله بساعدك
أبد حبيبتي لا تستحين و لا شي كل اللي في عالم حواء بمثابة خواتي عادي اطلبي اي شي و انا حاضرة
dalo3a zoje
dalo3a zoje
أختي إذا تقدرين تساعديني أبغى عن عمل المرأة من حيث إيجابياته وسلبياته وأكون لكِ شاكرة
أختي إذا تقدرين تساعديني أبغى عن عمل المرأة من حيث إيجابياته وسلبياته وأكون لكِ شاكرة
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حبيبتي انا حطيت لك الموقع هذا لأنه فيه جداول و ما قدرت أنزلها هنا
اتمنى انه يفيدك
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حياااااااااتي كيف اطرشلج اوراق project ترى ماعرف استخدم سكنر وماأقدر اطبع لأنه اوراق وايده .

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تحياتي لك
احلام الربيع22
لا يمكنك مشاهدة هذا التعليق لانتهاكه شروط الاستخدام.
السلام عليكم دلوعه زوجها

كيف حالك ياقمر
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بليز ياقلبي ابغى منك براجراف مايتعدى 10_8 اسطر وابغى كلماته بسيطه الله يوفقك يارب

العنوان ؟الفرق بين العادات السعوديه والعادات المصريه في رمضان (يعني مثلا مثل الكشري؛الفوانيس؛....)بس مو طويل

بليز عاجل الله يخليك دائما دلوعه لزوجك

معليش ابغى اسالك سؤال ؟؟؟ممكن:42:

انت من ايه جامعه تخرجت وكيف طورت لغتك لان ماشاء الله عليك بيرفكت ونفسي اصير مثلك


ودمت غاليه.........:26: