Spine

... breeder in charge, and then would we have an entirely different phylum one day? At one point an inverbrate started having a useless beginning of a spine that would be rooted out by NS. There is no way of knowing if this actually happened in the past because present organisms have distinct phenotypical ...

See entire post

... skin Echinoderms Five-fold radial symmetry in living forms, mesodermal calcified spines about 7,000 extant and 13,000 extinct species Echiura Spine tail Spoon worms Set of hooks at posterior end about 140 Entoprocta Inside anus Goblet worm Anus inside ring of cilia about 150 Gastrotricha Hair ...

See entire post

... for the back are primarily aimed at strengthening the muscles either side of the vertebral column, since these muscles act as supports for the spine. To do it, you should bear in mind that there are TWO sets of muscles, and both need to be exercised and strengthened to keep things in balance. ...

See entire post

... that there was no good reason for those to be maintained. And the fact that there are no real alternative is avery excellent reason. Example our spine sucks for bipedal position, really, but making it really better would require massive changes in our body plan that are much more likely to be ...

See entire post

... that there was no good reason for those to be maintained. And the fact that there are no real alternative is avery excellent reason. Example our spine sucks for bipedal position, really, but making it really better would require massive changes in our body plan that are much more likely to be ...

See entire post