What is the basic building block of the nervous system?

What is the basic building block of the nervous system?

• A. Dendrites
• B. Neuron
• C. Nucleus
• D. Muscle fiber

Answer: (B)

Neurons are the basic building blocks of the nervous system. They’re specialized cells that generate and transmit electrical signals and communicate with other neurons, muscles, and glands. A neuron includes a cell body with a nucleus, plus dendrites that receive signals and an axon that sends signals onward. The nucleus is essential for cell function, but it doesn’t carry messages by itself. Dendrites are important receivers, but they’re only part of a neuron. Muscle fibers belong to the muscular system and respond to neural input, not to the nervous system’s building blocks themselves. So the neuron is the fundamental unit because it’s the cell type that actually processes and transmits information, forming the networks that underlie all nervous activity.

Neurons are the basic building blocks of the nervous system. They’re specialized cells that generate and transmit electrical signals and communicate with other neurons, muscles, and glands. A neuron includes a cell body with a nucleus, plus dendrites that receive signals and an axon that sends signals onward. The nucleus is essential for cell function, but it doesn’t carry messages by itself. Dendrites are important receivers, but they’re only part of a neuron. Muscle fibers belong to the muscular system and respond to neural input, not to the nervous system’s building blocks themselves. So the neuron is the fundamental unit because it’s the cell type that actually processes and transmits information, forming the networks that underlie all nervous activity.