Pyramidal neurons of the cortex painted on a golden background. Pyramidal neurons all have a very organized structure with a triangular shaped cell body and are among the largest neurons in the brain. Basal dendrites spread to deeper areas of the cortex, and one large apical dendrite that extends towards he surface of the cortex. Dendrit a receive input from other neurons to integrate signals from multiple neurons. The pyramidal neurons receive input from multiple neurons with a single pyramidal neuron receiving about 30,000 excitatory inputs and 1700 inhibitory inputs. This is my experiment with metallic paint.