Cell body is broad, rounded, pyriform part of the neuron that contains a central nucleus, abundant cytoplasm and various cell organelles except centrioles. Dendrites are fine short and branched protoplasmic processes of cell body that pick up sensations and transmit the same to the cell body. Axon is a long fibre like cytoplasmic process that carries impulses away from cell body. Myelin sheath covers the axon of nerve cell.