36

The spinal cord consists of __ segments, each of which gives rise to a pair of __

A __ gives rise to nerves leading to the upper limbs,

a __ gives rise to those innervating the lower limbs.

Two deep longitudinal grooves __ divide the cord into right and left halves.

made up of bundles of myelinated nerve fibers (nerve tracts)

surrounds a butterfly- shaped core of __ housing interneurons

contains cerebrospinal fluid

The spinal cord has two major functions:

Tracts carrying sensory information to the brain are called

carry motor information from the brain

is the largest, most complex portion of the nervous system, containing 100 billion multipolar neurons.

brain division

largest portion and associated with higher mental functions

processes sensory input

coordinates muscular activity

coordinates and regulates visceral activities