A neuron is composed of what three main parts?

The correct response identifies the three main parts of a neuron as the cell body, dendrites, and an axon.

The cell body, or soma, is the central part of the neuron that contains the nucleus and organelles, playing a crucial role in maintaining the cell's health and functionality. Dendrites are branching extensions of the neuron that receive signals from other neurons and conduct these impulses toward the cell body. The axon is a long, slender projection that transmits electrical impulses away from the cell body to other neurons or target cells.

Understanding these components is vital as they each have specific functions that contribute to the neuron's ability to communicate within the nervous system. This knowledge is foundational in neurobiology, as it outlines the structure and the pathway for nerve impulse transmission.