PATHOLOGY

Detailed explanation-1: -Nerve cells get their energy from burning glucose (“blood sugar”) from food together with oxygen from the inspired air. Compared to other organs, the brain needs a very large supply of energy: even though it only weighs about 2% of the total body weight it uses 25% of the oxygen we breathe.

Detailed explanation-2: -Neurons (also called neurones or nerve cells) are the fundamental units of the brain and nervous system, the cells responsible for receiving sensory input from the external world, for sending motor commands to our muscles, and for transforming and relaying the electrical signals at every step in between.