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15-11-2022
Biology

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Neural tissue begins as a thickening of a portion of the ectoderm that overlies the ______.

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19-11-2022

Beginning with the thickening of a section of the ectoderm that lies above the notochord, neural tissue develops.

What are notochords and what do they do?

The notochord seems to be the distinguishing feature of the chordates and plays crucial roles in the development of vertebrates. It acts as a major skeletal component of the growing embryo as well as a source in midline signals that design neighboring tissues.

What materials make up a notochord?

The notochord is indeed a long, rod-shaped structure that forms dorsally and ventrally of the neural tube. The glycoproteins that make up the majority of the notochord's structure are enclosed in a collagen fiber sheath that is wound into two conflicting helices. The glycoproteins are kept in turgid, vacuolated cells.

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