What is the combining form for nerve?

The combining form for nerve is "neur/o." This term originates from the Greek word "neuron," which means nerve. In medical terminology, "neur/o" is commonly used as a prefix or suffix in various terms related to the nervous system, such as "neurology" (the study of nerves and the nervous system) and "neurotransmitter" (a chemical messenger that transmits signals across a synapse from one neuron to another). The use of this combining form allows for the clear communication of medical concepts related to nerves and their functions within the body.

The other options pertain to different medical concepts: "path/o" relates to disease, "psych/o" pertains to the mind, and "vas/o" refers to blood vessels. Each of these terms is important within their specific contexts, but they do not have any connection to nerves or the nervous system.