What is the function of neurons?

Which of the following pairs of structures is distinct from the other types of cells found in neurons?

Which of the following statements is true regarding the Nodes of Ranvier?

Unipolar neurons with an axon and no dendrite are present in

The gap between two adjacent myelin sheaths is called ........

Mark the following statements as true/false and choose the correct option from the codes given below:
$I.$ Neuroglial cells are the packing and supporting cells found in the brain and spinal cord.
$II.$ Oligodendrocytes are a category of glial cells that form myelin sheaths around the axon.
$III.$ Microglia provide mechanical support to the neurons.
$IV.$ Astrocytes communicate with one another through potassium channels.