"Vertebral canal" Quotes from Famous Books
 ... brain; and, in fact, the entire ganglionic system of nerves is analogous to the nervous system of certain among the lower animals—the crustacea and mollusks. These possess neither brain nor spinal cord; their nerve-centres, instead of being concentrated in a cranium and vertebral canal, are entirely disseminated through the cavities of the trunk, as are the visceral plexuses in vertebrated animals. In these, however, the addition of a brain and spinal cord to the original rudimentary nervous system, powerfully ...
— The Education of American Girls • Anna Callender Brackett |
