Question

What roles can glial cells play?

Immunity and mechanical support

Mechanical support and ionic - balance of the extracellular space

Ionic balance of the extracellular space and myelination

and a b only

a, b and c

Answer 1

Glial cells are supportive cells surrounding the neurons and thus form the supporting system for the nervous system. They do not conduct electrical impulses and thus provides insulation. However, this use helps them to maintain the synapses intact in the nerve cells. They are more abundant in the central nervous system.

So they provide mechanical support but is not involved in immunity as is part of the nervous system. hence a is wrong.

Myelination is the formation of sheath around the nerve cells and are not formation of glial cells. However, glial cells maintain the ionic balance of the extracellular space in the nervous system. Hence c is not correct.

Hence, a,b only and a, b and c are also not correct.

Glial cells provides mechanical support to the nerve cells by building mass and body and at the same time retain the nerve impulses intact in the nerve cells by maintaining the ionic balance in the extracellular space.