Question

What constitutes the central and peripheral nervous systems? How are the components of the central nervous system protected?

Answer 1

• Central nervous system comprises of brain and spinal cord. 
• Peripheral nervous system is composed of nerves which are outside the spinal cord. 
• Central nervous system has a well-developed system for its protection.
• Brain is enclosed in a hard shell know as skull. 
• Spinal cord is enclosed in vertebral column for its protection. 
• Along with these there is cerebrospinal fluid which protects the brain from mechanical shocks.