Question

Several nervous system diseases result from a loss of support cells or substances produced by support cells (such as myelin). The primary function of these support cells is to
A.Act as supporting structures within nervous tissue.
B.Produce insulating material around axons.
C.Assist in the conduction of impulses along neurons.
D.All of the above

Answer 1

Hint:
A complex nervous system is found in Animals. It is an important system that plays a vital role in every aspect of our life. Cyton is the main part of neurons and is also known as the cell body or soma. It is covered by a protective membrane.

Complete answer:
The support cell of the neuron is known as glial cells or neuroglia and helps out in many functions of the cells. Astrocytes are glial cells that are star-shaped and present within the brain and spinal cord. These astrocytes are 20 and 40% of all glial cells. These astrocytes assist in metabolic function, regulation of the extracellular ionic environment, neurotransmitter uptake, modulation of synaptic transmission, and promotion of myelination by oligodendrocytes. Oligodendrocytes are charged with insulating the axons in CNS. They are able to carry out this function by producing a myelin sheath. The axon is covered with a myelin sheath and made up of fatty materials. Its main aim is to insulate one nerve cell from another.
Microglial cells make up between 10 and 15% of cells within the brain and are of a mesodermal origin. These cells are activated in response to tissue damage and are capable to recognise foreign antigens.
Hence the correct answer is All of the above

Option ‘D’ is correct

Note:
Support cells have a variety of roles in the nervous system, but they all tend to involve maintaining the electrical impulse.