What are the nervous system and neurons and how do they relate to one another?

The nervous system is a complex network of cells that coordinates the body's voluntary and involuntary actions by transmitting signals between different parts of the body. Neurons are the fundamental units of the nervous system, specialized cells that transmit information through electrical and chemical signals. They communicate with one another and with other types of cells, allowing for the integration and processing of sensory information, motor control, and cognitive functions. Together, neurons form intricate pathways and networks that enable the nervous system to function effectively.