Motor neurons of the somatic motor nervous system have their nerve cell bodies, or somas, in the

The white matter of the cerebellum constitutes its

​The middle of the three spinal meninges is called the ____ mater.

This is a congenital defect resulting from the failure of one or more vertebrae to form a complete vertebral arch for enclosure of the spinal cord.

The cell bodies of the cerebral neurons are located in

​The ____ division of the autonomic nervous system stimulates and speeds up certain bodily activities.

​Myelin sheaths surrounding nerve fibers (axons) in the peripheral nervous system are produced by ____.

In this disorder, oligodendrocytes and myelin sheaths of the CNS deteriorate and are replaced by hardened scar tissue:

The medulla oblongata contains all the ascending and descending tracts that connect the spinal cord and various parts of the brain.​

The lateral sulcus of the cerebrum separates the ___ from the ___.