What does non-neuronal mean?
Definition of nonneural : not of, relating to, or affecting the nerves or the nervous system : not neural nonneural cells nonneural mechanisms.
What is nonneuronal cells?
The non-neuronal cells of the CNS include glia, which reside in the parenchyma and are subdivided into microglia, astrocytes, oligodendrocytes and oligodendrocyte progenitors (NG2 glia), and pericytes, endothelial and ependymal cells, which reside in other cellular compartments.
What are the function of glial cells?
Each type of glial cell performs specific jobs that keep the brain functioning. Primarily, glial cells provide support and protection to the neurons (nerve cells), maintain homeostasis, cleaning up debris, and forming myelin. They essentially work to care for the neurons and the environment they are in.
What function do astrocytes play in the CNS?
Astrocytes play a critical role in normal function of the mammalian nervous system. Astrocytes regulate synaptic transmission and plasticity, protect neurons against toxic compounds, and support metabolically to ensure their optimal functioning.
Are oligodendrocytes glial cells?
Oligodendrocytes are another type of glial cells and these cells are responsible for the myelination of axons in the central nervous system (CNS).
What is the difference between neurons and glial cells?
Neurons refer to the specialized cells of the nervous system, receiving and transmitting chemical or electric signals, while the glial cells refer to the cells that surround neurons, providing support and insulating them.
How are dendrites and axons difference?
Dendrites receive electrochemical impulses from other neurons, and carry them inwards and towards the soma, while axons carry the impulses away from the soma. 2. Dendrites are short and heavily branched in appearance, while axons are much longer.
Is astrocyte CNS or PNS?
Key Points. Neuroglia in the CNS include astrocytes, microglial cells, ependymal cells and oligodendrocytes. Neuroglia in the PNS include Schwann cells and satellite cells. Astrocytes support and brace the neurons and anchor them to their nutrient supply lines.
What are the two functions of astrocytes?
Functions of astrocytes include physical and metabolic support for neurons, detoxification, guidance during migration, regulation of energy metabolism, electrical insulation (for unmyelinated axons), transport of blood-borne material to the neuron, and reaction to injury.