Brain of the Rat Hippocampus Area CA1 Stratum Radiatum Cells CA1 Pyramidal Neuron Cell Types in S. Radiatum Astrocytes Neuronal Components Axons Axon Segments from S. Radiatum Models of Axon Packing Dendrites Spiny Segments from S. Radiatum Dendritic Filopodium Astrocyte-Synapse Relationship in S. Radiatum Ultrastructure (General) Chemical Synapses Neuromuscular Junction (NMJ) Comparative Morphology of NMJ and Spine Synapses Neuropil of S. Radiatum Volumes of Neuropil from S. Radiatum Synapses in S. Radiatum Comparative Morphology of Spine Synapses Organelles Smooth Endoplasmic Reticulum Spine Apparatus Adhesion Junctions Subsynaptic Ribosomes