Question

which of the following is contained within gray matter?
glial cells, axons of motor neurons, and schwann cells
glial cells and myelinated fibers
cell bodies, dendrites, and proximal parts of axons of neurons
the distal part of axons of lower order motor neurons
glial cells only

Explanation:

Gray matter in the nervous system contains cell bodies, dendrites, and proximal parts of axons of neurons. Glial cells are present in both gray and white matter. Myelinated fibers (axons with myelin sheaths) are mainly in white matter. Schwann cells (in PNS) are associated with myelination of peripheral axons. The distal part of axons of lower - order motor neurons is more related to the periphery. Glial cells only is incorrect as gray matter has neuronal components too.

Answer:

Cell bodies, dendrites, and proximal parts of axons of neurons