Rods and cones are found in the _______

One way older adults compensate for neuron loss is

A) with an increase in glial cells, which myelinate neural fibers. B) to call on additional brain regions to support cognitive processing. C) with increased efficiency of the central nervous system. D) with increased efficiency of the autonomic nervous system.

in the grey matter of the brain and spinal cord, there are many more neuroglia cells than neurons

a. true b. false