The functions of NS depend on interactions between neurons in neuronal pools. Most complex neural processing occurs in CNS.
In the PNS
Cell bodies of sensory neurons and visceral motor neurons are found in ganglia
Axons bundled together in nerves, with spinal nerves connected to spinal cord, cranial nerves connected to brain
In the CNS
Collection of neuron cell bodies with common function is called a center
Center with distinct anatomical boundary is nucleus
Layer of gray matter is neural cortex covers portions of brain surface
Term higher center refers to most complex integration centers, nuclei, brain cortical areas
Describe following anatomical structures within the central nervous system: center, tract, pathway.
A center is a collection of neuron cell bodies with a common function. Bundles of axons in the CNS that share common origins, destinations, and functions are called tracts. The centers and tracts that link the brain with the rest of the body are called pathways.
