1. The centre of the tube is the " neural canal ". 2. The notochord becomes a canal within the embryo known as the neural canal . 3. The hollow interior is called the neural canal . 4. Because of weathering, many of the smaller neural canals and foramina could not be identified for certain. 5. The specimen displays several neural canal is large and teardrop-shaped anteriorly but small and circular at its posterior opening. 6. As these sections develop around the neural canal , the inner neural canal becomes known as " primitive " ventricles. 7. As these sections develop around the neural canal, the inner neural canal becomes known as " primitive " ventricles. 8. It consist of an elongated natural internal cast or endocast of the neural canal of the sacrum, about sixty centimetres long. 9. In the back vertebrae, the neural arches, above the level of the neural canal , are not especially lengthened to above. 10. In the vertebrae, the neural canals ( through which the spinal cord would pass ) extend into the centra, forming deep concavities.
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