Question

The core component of central nervous system is

• A. Blood
• B. Neurons
• C. Ganglia
• D. Both A and B

Answer 1

The correct option is B Neurons

• Neurons are the basic units of the nervous system. Every neuron is made of a cell body (also called a soma), dendrites and an axon. Dendrites and axons are nerve fibres.
• The central nervous system consists of the brain and the spinal cord
  
• The human brain contains around 100 billion neurons.
  
• Hence the core component of the central nervous system is Neuron.
  
• So, the correct answer is 'Neurons'.