An<unk>  is a<unk>  that emerges from the apex of a pyramidal cell.<unk> s are one of two primary categories of<unk> s, and they distinguish the pyramidal cells from spiny stellate cells in the cortices. Pyramidal cells are found in the prefrontal cortex, the hippocampus, the entorhinal cortex, the olfactory cortex, and other areas.<unk>  arbors formed by<unk> s are the means by which synaptic inputs into a cell are integrated. The<unk> s in these regions contribute significantly to memory, learning, and sensory associations by modulating the excitatory and inhibitory signals received by the pyramidal cells.
Apical dendrite
Basal dendrite
Specific granule
Azurophilic granule
Growth cone
Axon terminal
Cortical minicolumn
Inner plexiform layer