Wonder how to remember 12 cranial nerves and their functions?
It’s not rocket science! What you need to do is to remember a cranial nerve mnemonic.
There are several mnemonics available that outline the names of cranial nerves as well as they are built in such a way that you can easily remember the sensory and motor functions of all cranial nerves.
We have compiled all possible mnemonics for you. So, you don’t have to. Just memorize a few of them or even single will do. They are funny, rude & even dirty liners that will make you laugh.
List of 12 cranial nerves mnemonics:
- On old Olympus’s Towering Top a Finn And German Viewed Some Hops
- Some Say Marry Money But My Brother Says Big Brains Matter More
- Ooh, Ooh, Ooh To Touch And Feel Very Good Velvet. Such heaven!
- Olympic Opium Occupies Troubled Tri-athletes After Finishing Vegas Gambling Vacations Still High
- On Occasion Our Trusty Truck Acts Funny, Very Good Vehicle Any How
- Only overgrown Orangutans Try To Aggravate Fat Vagrants Getting Vodka And Hamburgers
6. On old Olympus’s towering top a Finn and German viewed some hops
This mnemonic helps to remember the cranial nerves in order of cranial nerve I to CN XII. Refer the following image for better understanding. It also contains the sensory, motor and mixed-function mnemonic for these nerves. Just remember both mnemonic and you are good to go!
5. Some say marry money but my brother says big brains matter more
As discussed above this helps to memorize the functions of nerves. It does have several other versions, instead of ‘big brains’ some say ‘big balls’.
4. Ooh, ooh, ooh to touch and feel very good velvet. Such heaven
Here is another dirty cranial nerve mnemonic that any guy can easily memorize.
3. Olympic Opium Occupies Troubled Tri-athletes After Finishing Vegas Gambling Vacations Still High
2. On Occasion Our Trusty Truck Acts Funny, Very Good Vehicle Any How
1. Only overgrown Orangutans Try To Aggravate Fat Vagrants Getting Vodka And Hamburgers
What are cranial nerves?
The nerves that originate in ‘Cranium'(area inside the skull) and connect the brain with various parts of human body i.e trunk, neck and head are considered as cranial nerves There are total of 12 cranial nerves that serve either as sensory, motor or both purposes and they are named accordingly to their respective functions.
Usually, they have assigned the Roman numbers from I to the XII and widely identified according to their numbers for example healthcare providers often call them cranial nerve I, cranial II, cranial nerve III and so on. These numbers assigned as per the position nerve within the cranium measuring from front to the back. So, an olfactory nerve gets ‘I’ number as it originates closer to the front part of a brain.
When we talk about these nerve function, they are divided into two parts.
- Sensory nerves – Some nerves work as sensory nerves by helping the brain to carry sensory information like the smell, touch, etc.
- Motor nerves – Few of them are motor nerves that help the brain to control the various movement so-called as motor nerves.
Cranial Nerves List
I. Olfactory nerve
This is the first nerve and is a sensory nerve as it helps to transmit information about various smells that we came across.
Our breathing includes inhalation and exhalation. When we inhale air containing aromatic molecules, olfactory nerve receptors get activated and generates the nerve impulses which further transmitted to an olfactory bulb.
These nerve receptors are located within the moist mucous lining of the nasal cavity which is also known as an olfactory epithelium, while the olfactory bulb is an oval-shaped bundle of nerve cells. These nerves further pass through the olfactory tract located under the front lobe of the brain.
These nerves meet the brain and pass all signals to a specialized area within a brain that analyses smell and store it for further references.
II. Optic nerve
This is the second cranial nerve involved in vision and has a sensory function.
Whenever we see an object, it is because of the rays of light that reflected from that object. This light enters our eyes and comes in contact with the specialized receptors within our retina named as rods & cones.
These receptors analyze the light and transmit the relevant signals to the optic nerve.
Both optic nerve then travels back within a skull towards the brain and meet together to form ‘Optic chiasm’ Optic chiasm is a place where optic nerves partially cross each other forming ‘X’ shaped area located at the bottom of the human brain.
From this optic chiasm, optic tract originates which carries the nerve impulses to the visual cortex located at the posterior part of the brain. The visual cortex then receives these impulses and analyzes the information.