NEET BIOLOGY

Detailed explanation-1: -(i) Neuroglia makes up more than one-half of the volume of neural tissue in our body. (ii) Neuroglia protects and supports neurons. (iii) When a neuron is suitably stimulated, an electrical disturbance is generated which swiftly travels along its cytosol.

Detailed explanation-2: -Neuroglia make up about half the volume of the CNS.

Detailed explanation-3: -Solution : Neuroglial cells make up more than one-half the volume of neural tissue in our body and, protect and support neurons.

Detailed explanation-4: -Astrocytes. Astrocytes are the most abundant neuroglia cells in the CNS. They have large cell bodies compared to other glia cells and have many processes which form a star-like shape.

Detailed explanation-5: -Glia are more numerous than nerve cells in the brain, outnumbering them by a ratio of perhaps 3 to 1. Although glial cells also have complex processes extending from their cell bodies, they are generally smaller than neurons, and they lack axons and dendrites (Figure 1.4).