The correct option is C All of the above
Nervous tissue is the main component of the two parts of the nervous system; the brain and spinal cord of the central nervous system (CNS) and the branching peripheral nerves of the peripheral nervous system (PNS), which regulates and controls bodily functions and activity.
Nervous tissue is made up of neurons, nerve fibres and neuroglia.
Neuroglia is non-neuronal cells that maintain homeostasis, form myelin and provide support and protection for neurons in the central nervous system and peripheral nervous system.