Neuroscience, also known as Neural Science, is the study of how the nervous system develops, its structure, and what it does. Neuroscientists focus on the brain and its impact on behavior and cognitive functions. ... Many researchers say that neuroscience means the same as neurobiology.

A nerve is the primary structure of the peripheral nervous system (PNS) that encloses the axons of peripheral neurons. A nerve provides a structured pathway that supports neuron function. A nerve consists of many structures including axons, glycocalyx, endoneurial fluid, endoneurium, perineurium, and epineurium.