Brain cells, also known as neurons, are the basic building blocks of the nervous system. They are responsible for processing and transmitting information throughout the body. CRANIA is the plural form of the word 'CRANIUM, ' which is the scientific term for the brain. Neurons are the most common type of brain cell, and they are responsible for sending and receiving electrical signals. Together, these two terms refer to the cells that make up the brain and allow it to function.