Question

How do pyramidal cells differ from typical unipolar neurons?

Answer 1

• Unipolar neurons have an axon going towards and from the soma. This is also known as having a single neurite. These cells can branch to form axons or dendrites depending on need in its environment.
• There are four major types of neurons based on their shape. Unipolar neurons are the most common neurons in invertebrates. These neurons are characterized by one primary projection that serves as both the axon and the dendrites.
• Sensory neurons for the skin are good examples of pseudounipolar neurons.
• Researchers explain that there could be a hundred or more types of neurons in the central nervous system. These unique brain cells include the pyramidal neuron that has a cell body featuring a triangular pyramid shape. Pyramidal neurons are found in the prefrontal cortex.
• They are neurons with a pyramidal shaped cell body (soma) and two distinct dendritic trees. The basal dendrites emerge from the base and the apical dendrites from the apex of the pyramidal cell body.
• Pyramidal neurons have been observed in birds, fish, reptiles, and all mammals studied.
• Faulty pyramidal cells are an important cause of brain disorders. Epilepsy, due to excessive neuronal excitation, is particularly common in brain regions containing many interconnected pyramidal neurons, such as the hippocampus.