
Terminals
This electron micrograph shows the terminal bouton of a synapse terminating on a dendritic spine. Dendritic spines provide sites for excitatory input to the neuron. Note the transmitter vesicles and the well-developed post-synaptic density in the bouton. Cross sections of many non-myelinated axons are also present. 25,000x

Dendritic spine
This electron micrograph shows the terminal bouton of a synapse terminating on a dendritic spine. Dendritic spines provide sites for excitatory input to the neuron. Note the transmitter vesicles and the well-developed post-synaptic density in the bouton. Cross sections of many non-myelinated axons are also present. 25,000x

Terminal bouton
This electron micrograph shows the terminal bouton of a synapse terminating on a dendritic spine. Dendritic spines provide sites for excitatory input to the neuron. Note the transmitter vesicles and the well-developed post-synaptic density in the bouton. Cross sections of many non-myelinated axons are also present. 25,000x

- Neurotransmitter vesicles
This electron micrograph shows the terminal bouton of a synapse terminating on a dendritic spine. Dendritic spines provide sites for excitatory input to the neuron. Note the transmitter vesicles and the well-developed post-synaptic density in the bouton. Cross sections of many non-myelinated axons are also present. 25,000x

Post-synaptic density
This electron micrograph shows the terminal bouton of a synapse terminating on a dendritic spine. Dendritic spines provide sites for excitatory input to the neuron. Note the transmitter vesicles and the well-developed post-synaptic density in the bouton. Cross sections of many non-myelinated axons are also present. 25,000x

Shaft of the dendrite
This electron micrograph shows the terminal bouton of a synapse terminating on a dendritic spine. Dendritic spines provide sites for excitatory input to the neuron. Note the transmitter vesicles and the well-developed post-synaptic density in the bouton. Cross sections of many non-myelinated axons are also present. 25,000x

Astrocyte processes >
Astrocytic processes are frequently seen associated with synapses where they monitor neurotransmitter levels. Astrocyte processes can be distinguished by the presence of glycogen granules in their cytoplasm.

Glycogen granules
Astrocytic processes are frequently seen associated with synapses where they monitor neurotransmitter levels. Astrocyte processes can be distinguished by the presence of glycogen granules in their cytoplasm.