The axon hillock, a region of the neuron's cell body, is characterized by which of the following?

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Contains abundant Nissl bodiesLacks Nissl granules entirelyLocated at the origin of dendritesExhibits a spherical shapeIs the site of synapse formation

Explanation

The axon hillock is a specialized area of the neuron's soma that does not contain Nissl granules, which are typically found in other parts of the cell body. This absence distinguishes it from regions rich in rough endoplasmic reticulum and ribosomes.