Question

Neurons are important components of

• A. Brain
• B. Central nervous system
• C. Spinal cord
• D. All of the above

Answer 1

Answer: (D)

All of the above

Our nervous system is made up of brain, spinal cord, sense receptors and a whole lot of nerves. But all these are ultimately made up of nerve cells or neurons.

Neurons are cells that send and receive electro-chemical signals to and from the brain and nervous system. There are about 100 billion neurons in the brain.