Two years into an Arctic expedition, they were forced to abandon ship a thousand miles north of Siberia. The Best Nonfiction Books of 2014 William OâConnor December 14, 2014 Going to the library was like a treasure hunt, an expedition.
The vertebral column, also known as the backbone or spine, is part of the axial skeleton. The vertebral column is the defining characteristic of a vertebrate, in which the notochord (a flexible rod of uniform composition) found in all chordates has been replaced by a segmented series of bonesâvertebrae separated by intervertebral discs.
Description of Backbone. Backbone: The bones, muscles, tendons, and other tissues that reach from the base of the skull to the tailbone. The backbone encloses the spinal cord and the fluid surrounding the spinal cord.Also called spine, spinal column, and vertebral column.Source: National Institute of Health. Backbone: the series of vertebrae forming the axis of the skeleton and protecting the spinal cord; the fall broke his back.ackbone: the series of vertebrae forming the axis of the skeleton and protecting the spinal cord; the fall broke his back.