Term: deep vertical fusiform cell

Definition: Deep vertical fusiform cells have cell bodies about 20 micrometers wide and their dendrites extend from the upper margin of the zone of vertical cells to the depth of the zone of optic fibers perhaps even deeper. The superficial and deep fields are usually notably different in the manner in which the dendrites branch and spread, the over-all size of the fields, the shapes of the fields, the type and density of spines, and the caliber of the dendrites.