THE BRAIN
T he Human brain is by far the most complex structure to be ever build. Its complexity has dazzled majority of the people since last century and is still the topic of research. The adult brain weighs about 1.3 – 1.5 kg and is approximately 2% of or total body weight, with Surface area of approximately 1120 cc in males and 1130 cc in females. In spite of its small size it contains millions and billions of neurons that carry out daily functions of the body and may be create someone like Einstein whose brain is still preserved for research purposes. The basic functional unit of brain is called as a neuron. It is a specialised type of cell that has the capacity to conduct and transfer electrical impulses, but once damaged can take years to regenerate. There are various types of neurons and are classified according to – A) The number of dendrites/processes B) The length of axons According to number of processes they are 1. Unipolar 2.