Information On Anencephaly Essay

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Running Head: Anencephaly Information on Anencephaly Discussion Board Phase 5 Deborah Thompson Anatomy and Physiology BIO141-0901B-02 Michelle Nelson Saturday, March 28, 2009 Abstract Anencephaly is a neural tube defect that generally develops in a fetus around the twenty-eighth day of development. The ability to breathe, and respond to sound or touch may be present. However, the infant will not be conscious or have the ability think. Brain tissues may be present although a major portion of the scalp, skull, and brain will be missing. The condition of anencephaly is a type of neural tube defect. More, it is considered an open neural tube defect, ONTD. The spine begins as cells that form a flat plate. During the third and fourth week the plate than rolls and forms the neural tube. This tube is referred to as tissue in the embryo stage. In an adult it becomes the brain, spinal cord, skull, and spinal column. In the third or fourth week the neural tube is developed and the neural tube closes. Failure of this closure at the head, or cephalic end, results in anencephaly. (National Institute of Neurological Disorders, 2009). Large portions of the scalp, skull, and brain will be missing. Eighty percent of the time this opening is exposed, and twenty percent of the time it will be covered with bone or skin. Occurring in one in one thousand births it affects females five times more than males. Facial features are usually present, although appearing distorted due to the skulls condition. A large portion of babies affected will miscarriage or be still born. Those who are alive at birth die within hours or days. (Children’s Hospital Boston. 2007). A diagnosis takes place in the prenatal stages and tests for anencephaly include maternal serum alpha-fetoprotein, AFP, blood test. High levels for the gestational age of the embryo are

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