What root word is related to the brain?

The root word related to the brain is "encephal/o." This term is derived from the Greek word "enkephalos," meaning "inside the head," and it specifically refers to the brain as an organ. In medical terminology, "encephal/o" is commonly used in terms such as "encephalitis" (inflammation of the brain) and "encephalogram" (a record of the brain's electrical activity).

While other options represent terms related to the nervous system, they do not specifically pertain to the brain. For example, "cerebr/o" refers more specifically to the cerebrum, the largest part of the brain responsible for higher brain functions. "Neur/o" relates to nerves and the nervous system as a whole, while "psych/o" pertains to the mind or psychology. Each of these root words has its own specific context within medical terminology, but "encephal/o" most accurately denotes the brain itself.