• A bundle of fibers that receives and sends messages between the body and the brain. The messages are sent by chemical and electrical changes in the cells that make up the nerves.
  NCI Dictionary of Cancer Terms
  U.S. National Cancer Institute, 2021
• A bundle of neuronal fibers that transmits electrochemical impulses encoding sensory and motor information from one body part to another.
  CDISC Terminology
  Clinical Data Interchange Standards Consortium (CDISC), 2021
• Any of the cordlike bundles of fibers made up of neurons through which sensory stimuli and motor impulses pass between the brain or other parts of the central nervous system and the eyes, glands, muscles, and other parts of the body; nerves form a network of pathways for conducting information throughout the body.
  CRISP Thesaurus
  National Institutes of Health, 2006
• Organ subdivision that primarily consists of nerve fibers aggregated into fasciculi by connective tissue to form elongated, cable-like structures that form a tree; together with other nerves (organ part) and nerve plexuses it constitutes the nerve (organ). Examples: radial nerve, sciatic nerve, vagus, chorda tympani, phrenic nerve, pelvic splanchnic nerve.
  Digital Anatomist
  University of Washington, 2003
• Part of the peripheral nervous system composed of bundles of nerve fibers running to various organs and tissues of the body using chemical and electrical signals to transmit sensory and motor information from one body part to another.
  NCI
  U.S. National Cancer Institute, 2021
• Segment of neural tree organ which has as its parts a nerve trunk and its branches; together with other nerves of the same tree it constitutes a neural tree. Examples: chorda tympani, digastric branch of facial nerve, greater petrosal nerve, posterior cutaneous branch of posterior ramus of cervical nerve, superior lateral cutaneous nerve of arm.
  Foundational Model of Anatomy
  University of Washington, 2017
• The peripheral nervous system consists of more than 100 billion nerve cells (neurons) that run throughout the body like strings, making connections with the brain, other parts of the body, and often with each other.
  Merck Manuals
  Merck & Co., Inc., 2025
• Nerve, in anatomy, a glistening white cordlike bundle of fibres, surrounded by a sheath, that connects the nervous system with other parts of the body. The nerves conduct impulses toward or away from the central nervous mechanism. In humans 12 pairs, the cranial nerves, are attached to the brain...
  Encyclopedia Britannica
  Encyclopedia Britannica, Inc., 2025