The term 'nerve cell' is composed of three parts: axon (4 letters), neuron (6 letters), and neurone (7 letters). An axon is a long, thin projection of a nerve cell that carries electrical signals away from the cell body. A neuron is a specialized type of cell that transmits information throughout the body. Neurones are the basic structural and functional unit of the nervous system. They are responsible for transmitting electrical signals between different parts of the body.