(3) Cells Of The Nervous System Flashcards
Supportive cells of the CNS and PNS
These cells does not conduct action potentials
Glial cells or neuroglia
Major supporting cells in CNS
Can stimulate or inhibit signaling activity of nearby neurons
Astrocytes
Cells of the CNS
Protect the brain by removing bacteria and cell debris
Ependymal cells
Provide an insulating material that surrounds axons
Oligodendrocytes
Provide insulating material around the axon
Glial cells or SCHWANN cells
Specialized layers that wrap around the axons
Axons are either unmyelinated or myelinated
Myelin sheaths
Axons with myelin sheaths are called ?
Myelinated axons
Gaps in the myelin sheath is called _______, occur about every millimeter between oligodendrocyte or between schwann cells
Nodes of ranvier
Groups of neuron cell bodies and dendrites, very little myelin
Gray matter
Bundles of parallel axons w/ their myelin sheaths, whitish in color
White matter
Gray matter on the surface of the brain is called ?
Cortex
Gray matter within the brain is called ?
Nuclei
Cluster of neuron cell bodies is called ?
Ganglion