A prominent Golgi apparatus and numerous mitochondria are also present. The centrosome present may be involved in microtubule formation. Neuronal inclusions include lysosomes and secondary lysosomes containing the pigment lipofuscin . Some neurons will also contain melanin inclusions. Dendrites and Axons Dendrites Dendritic means 'tree-like' .
Dendrites extending from the cell body of the neuron give the appearance of arborization.
These cellular processes extend from the soma of multipolar neurons such as motor neurons. Their tendency to branch as well as the presence of labile dendritic spines increases the receptive surface of the cell for synaptic contacts. Although stimuli may affect the membrane potential of the dendrites, there is no conduction of action potentials through the dendrites to the cell body . Rather such transport occurs as graded potentials which are not regenerative. Dendrites contain organelles similar However the Golgi apparatus remains closely associated with the to those found in the cell body .