So being a duplicate of Jack and being such that the number 17 exists are extrinsic, while being identical to Jack and being a vertebrate (i.e. having a vertebral column) are intrinsic.
In later vertebrate development, it becomes part of the vertebral column.
Well, not all vertebrates have straight backs, but all have backbones, or vertebral columns, that help support their bodies.
The somites, which later give rise to the segmented body muscles and the vertebral column, are the basis of the segmented organization typical of vertebrates (seen especially in the lower fishlike forms but also in the embryos of higher vertebrates).
And they could be used to relieve pressure on spinal nerves that are being pinched by rogue vertebral discs, by shaving away the offending part of the disc.
Parts of a skull and vertebral column, plus fragments of the creature's legs and pelvis, suggest that it measured some 15 metres long.For palaeontologists, however, that is not the most interesting thing about the new specimen.
Laurie Mathiason, a 20-year-old Canadian, died in 1998, of "a ruptured vertebral artery, which occurred in association with a chiropractic manipulation of the neck", according to the coroner.
The vertebral column was well differentiated.
Collectively, the somites constitute the vertebral plate.
See also vertebral column.
The lower, medioventral part of the somite, called the sclerotome, breaks up into mesenchyme, which contributes to the axial skeleton of the embryo that is, the vertebral column, ribs, and much of the skull.
