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What does CN stand for in medical terms?

Published in Medical Abbreviations 2 mins read

In medical terminology, CN stands for cranial nerves.


Here is a breakdown of what CN can mean according to the provided references:


Abbreviation Meaning
CN Cranial Nerves
CNS Central nervous system
CNVM Choroidal Neovascular Membranes
C/O or c/o complains of...


Understanding Cranial Nerves

  • Cranial nerves are a set of twelve paired nerves that emerge directly from the brain, as opposed to spinal nerves, which emerge from segments of the spinal cord.
  • These nerves are responsible for carrying sensory and motor information to and from the head and neck.
  • They play a crucial role in various functions such as vision, hearing, taste, smell, facial movements, and swallowing.
  • Each cranial nerve is given a Roman numeral, from I to XII, and a name that indicates its function or area of distribution.
  • For instance, CN I is the Olfactory Nerve (smell), and CN X is the Vagus Nerve, which is involved in many autonomic functions.


Other possible meanings, but less common

While CN most commonly refers to cranial nerves, the reference does list a few other less common meanings in medical contexts, such as:

  • CNS: Central Nervous System. This refers to the brain and spinal cord, which are the body's main control and processing centers.
  • CNVM: Choroidal Neovascular Membranes. This term relates to the abnormal growth of new blood vessels in the choroid of the eye, a condition often associated with certain eye diseases.


It is important to note that context is crucial when interpreting medical abbreviations like CN. When in doubt, always seek clarification to ensure accurate understanding.


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