NOTOCHORD

Notochord

The notochord is a flexible rod-shaped body found in embryos of all chordates. It is composed of cells derived from the mesoderm and defines the primitive axis of the embryo. In some chordates, it persists throughout life as the main axial support of the body, while in most vertebrates it becomes the nucleus pulposus of the intervertebral disc. The notochord is found ventral to the neural tube.

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notochord

Noun

  1. A flexible rodlike structure that forms the main support of the body in the lowest chordates; a primitive spine
  2. A similar structure found in the embryos of vertebrates from which the spine develops


The above text is a snippet from Wiktionary: notochord
and as such is available under the Creative Commons Attribution/Share-Alike License.

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