Neuron Cell Body - Structure and Functions - GetBodySmart Neuron cell bodies basically have the same cytoplasmic components as other types of secretory cells. The cell's large nucleus and nucleolus are the most prominent cell body structures. 1. 2. Group of free ribosomes and and numerous stack of ribosome studded rough endoplasmic reticulum (REP) surround the nucleus. 1. 2. 3.