Definition that contains myelin
- ms a chronic progressive nervous disorder involving loss of myelin sheath around certain nerve fibers
- cortex the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum
- tract a bundle of myelinated nerve fibers following a path through the brain
- pathway a bundle of myelinated nerve fibers following a path through the brain
- medullated (of neurons) covered with a layer of myelin
- myelinated (of neurons) covered with a layer of myelin
- myelinization the development of a myelin sheath around a nerve fiber
- pallium the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum
- peduncle a bundle of myelinated neurons joining different parts of the brain
- autonomic ganglion any of the ganglia of the autonomic system whose unmyelinated fibers innervate the internal organs