Wednesday, January 9, 2013

Turner Syndrome

turner syndrome Turner syndrome or Ullrich-Turner syndrome (also known as gonadal dysgenesis[1]:550), 45 XO, encompasses several conditions in human females, of which monosomy X (absence of an inbuilt kindle chromosome, the Barr body) is most common. It is a chromosomal abnormality in which all or part of one of the sex chromosomes is bump off (unaffected humans have 46 chromosomes, of which two are sex chromosomes). Normal females have two X chromosomes, only in Turner syndrome, one of those sex chromosomes is missing or has new(prenominal) abnormalities. In some cases, the chromosome is missing in some cells but not others, a condition referred to as mosaicism[2] or Turner mosaicism. Occurring in 1 in 2000[3] 1 in 5000 phenotypical females,[4] the syndrome manifests itself in a number of ways. There are peculiarity physical abnormalities, such as short stature, swelling, broad chest, busted hairline, low-set ears, and webbed necks.[5] Girls with Turner syndrome typically experience gonadal dysfunction (non-working ovaries), which results in amenorrhea (absence of menstrual cycle) and sterility. Concurrent health concerns are also frequently present, including congenital heart disease, hypothyroidism (reduced ductless gland secretion by the thyroid), diabetes, vision problems, hearing concerns, and many autoimmune diseases.
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[6] Finally, a specific pattern of cognitive deficits is often observed, with special difficulties in visuospatial, mathematical, and memory areas.[7] Turners syndrome is named after Henry H. Turner. Signs and symptoms Lymphedema, big legs of a newborn with Turner syndrome Common symptoms of Turner syndrome accommodate: * Short stature * Lymphedema (swelling) of the hands and feet * Broad chest (shield chest) and widely separated nipples * Low hairline * Low-set ears * Reproductive sterility * Rudimentary ovaries gonadal legal profession (underdeveloped gonadal structures that later become fibrosed) * Amenorrhoea, or the absence of a... If you take to get a full essay, order it on our website: Orderessay

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