NDA General Science Biology Questions Part 1

A nerve is an enclosed, cable-like bundle of axons (the long, slender projections of neurons) in the peripheral nervous system. Neurons are sometimes called nerve cells, though this term is potentially misleading since many neurons do not form nerves, and nerves also include non-neuronal Schwann cells that coat the axons in myelin. Finally, the entire nerve is wrapped in a layer of connective tissue called the epineurium.