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What is a neural tube?
The neural tube is the part of the development of the central nervous system in a developing embryo. What is pretty amazing about this is that within the first 4 weeks of development from conception, the entire framework of the central nervous system will have finished forming! Around day 18, the neural plate appears at the midline of the thickening of the ectoderm, the outermost layer of the germinal sac. Essentially what happens over the next couple of days is that the neural plate forms a depression, which eventually is pushed down and separated from the original cell layer by the fusion of the neural crests, resulting in the formation of a neural tube - this is rather hard to explain without a proper diagram!
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The neural tube closes around the 28th day of gestation, so that would be at the end of the fourth week.
In the embryo the neural tube forms the central nervous system in the fetus, which is the brain and spinal cord. The reason pregnant women are given folic acid supplementatio…n is to help prevent neural tube defects, which can range from fairly benign all the way to anencephaly (where the baby is born without a brain).
spinal cord may be affected
The vitamin known to help prevent neural tube defects is folic acid, also called Vitamin B9 or folate. Foods rich in folate include the following: Black-eyed peasLentilsOkraK…idney beansGreat Northern beansBroccoliIceberg lettuceBeetsLima beansSunflower seedsSpinachBrussels sproutsCornAsparagusBaked beansGreen peasBaked potatoCabbageAvocadosPeanutsRomaine lettuceTomato JuiceOrange juiceStrawberriesOrangesEggsBananas Please see the Related link below for more information.
The brain and spinal cord. The cephalic portion of the nueral tube becomes the brain, the caudal portion becomes the spinal cord.
Folate is a vitamin needed to prevent neural tube defects in infants. Folate is reccommended for women of childbearing age.
In the 3rd week of pregnancy called gastrulation, specialized cells on the dorsal side of the fetus begin to change shape and form the neural tube.
if measurement of neural tube is greater than 2.5mm indicates down syndrome
Folic acid, also known as folate, causes neural tube defects and disorders like spinal bifida.
Vitamin B9 (Folate) deficiency can lead to neural tube defect (NTD) and the main source of it is green vegetables. That's why any woman who plans on getting pregnant should co…nsume sufficient amounts of B9 because the neural tube closes 27 days after conception meaning before a woman even knows she's pregnant!
The long tube-like structure of a neuron that transmits signals to other neurons is known as the axon. Neurons are comprised of three major parts: the soma, dendrites, and… axon.
This occurs as a result of the folding of ectoderm tissue. The ectoderm is a type of germ cell layer present in a young embryo.