What are cranial nerves?
Before we discuss what a Cranial Nerve Chart is, let's briefly talk about cranial nerves.
How many cranial nerves are there? Twelve cranial nerves are found in pairs in the uppermost parts of the body, specifically in the brain and other parts of the head, such as the eyes and nose, the neck, and the upper torso. All cranial nerves originate in the brain.
Cranial nerves, like spinal nerves, are among the most essential components of the human body because they are responsible for several of our most vital functions. These cranial nerve functions include sight, hearing, smell, taste, and abilities like swallowing food and making a facial expression. They also influence our balance and equilibrium. Because of these nerves, we can feel sensations tied to our eyes, ears, nose, mouth, and skin.
Here are the 12 cranial nerves:
- Cranial nerve I (olfactory nerve)
- Cranial nerve II (optic nerve)
- Cranial nerve III (oculomotor nerve)
- Cranial nerve IV (trochlear nerve)
- Cranial nerve V (trigeminal nerve)
- Cranial nerve VI (abducens nerve)
- Cranial nerve VII (facial nerve)
- Cranial nerve VIII (vestibulocochlear nerve, sometimes called the vestibular nerve)
- Cranial nerve IX (glossopharyngeal nerve)
- Cranial nerve X (vagus nerve)
- Cranial nerve XI (accessory nerve, sometimes called spinal accessory nerve)
- Cranial nerve XII (hypoglossal nerve)
If something bad happens to these nerves and their nerve fibers, we may develop serious medical conditions. For example, if our optic nerve is damaged, we might go blind. Other possible problems that will arise if our cranial nerves get damaged include loss of balance, increased risk of falling, loss of the sense of smell or taste, weakness, and even difficulties in body coordination and motor functions.
For neurologists and adjacent healthcare professionals, the cranial nerves are important subjects because the status of these nerves can help professionals determine the presence of neurological conditions.










