although in the light microscope the small neurons appear to be similar , at the ultrastructural level three neuron types have been distinguished : ( 1 ) ovoid shape with cytoplasm densely packed with organelles especially rer , ( 2 ) round shape with very little cytoplasm with few organelles , and ( 3 ) triangular shape with a pale cytoplasmic matrix with some rer .
C0010834
cytoplasm
C1383501
cytoplasmic matrix