SCIENCE
NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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provide nutrition, support, and insulation
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Keeps the body warm
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Sends strong signals on the axon
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Insulates the axon to send a fast signal
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Detailed explanation-1: -Glial cells are non conducting supporting cells of nervous system which provide nutritional support and insulation to the neurons present in central and autonomous nervous system. The three types of glial cells in the mature central nervous system are astrocytes, oligodendrocytes and microglial cells.
Detailed explanation-2: -The insulation for axons in the nervous system is provided by glial cells, oligodendrocytes in the CNS, and Schwann cells in the PNS.
Detailed explanation-3: -Astrocytes provide nutrients to neurons, maintain their extracellular environment, and provide structural support. Microglia scavenge pathogens and dead cells.
Detailed explanation-4: -The glial cells of the PNS are called Schwann cells and satellite cells. Schwann cells play the same functional role in the PNS as oligodendrocytes do in the CNS, namely providing an insulating cover of myelin over axons and dendrites.