Nervous System Dictionary

Tanycytes: A specialized type of ependymal cells in the third ventricle of the brain

The cerebrospinal fluid is in direct contact with the free surface of the Tanycytes, which do not possess cilia.

Saltatory conduction: The larger areas of the exposed axolemma in the CNS.

Saltatory conduction is experienced as the brain sends down a signal to the spinal cord.

Neuropil: The meshwork of axonal, dendritic, and glial processes associated with the grey matter.

Alzheimer’s disease is characteristic of abnormal neurites and neuropil threads.