2/Let’s start with L1. L1 radiates to the groin. I remember that b/c the number 1 is, well, um…phallic. So the phallic number 1 radiates to the groin.
3/Let’s skip to L3 for a second. I remember L3 is to the knee—easy, it rhymes!
4/Ok, back to L2. Two is the number between 1 and 3, so the distribution of L2 is between the distributions of L1 and L3—and between the groin and knee is the thigh. L2 radiates to the thigh. It’s not the catchiest way to remember it, but it works.
5/L4 radiates to the calf. I remember this bc the number 4 looks like the calf, with the top part of the 4 looking like a bulging gastroc & the bottom part of the four is the rest of the calf connecting to the ankle. Don’t we all wish we had bulging gastrocs like the number 4!
6/L5 radiates to the big toe. So I have the little rhyme “Five is to the big guy!” L5 is also foot drop. So I remember big guys are heavy, and heavy gravity = drop. If I hear the history “foot drop,” I never stop looking until I have traced out the entire L5 nerve root.
7/Finally, S1 radiates to the side of the foot. I remember this bc both S1 & Side start w/S.
So now you know where in the lumbar spine to look when a patient says the pain radiates down the leg & hopefully remembering the lumbar radicular distributions won’t cause you any pain!
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1/Does your ability to remember temporal lobe anatomy seem, well, temporary?
Or are you feeling temporally challenged when it comes to this complex region?
Here’s a thread to help you remember the structures of the temporal lobe!
2/Temporal lobe can be divided centrally & peripherally.
Centrally is the hippocampus.
It’s a very old part of the brain & is relatively well preserved going all the way back to rats.
Its main function is memory—getting both rats & us through mazes—including the maze of life
3/Peripherally is the neocortex.
Although rats also have neocortex, theirs is much different structurally than humans.
So I like to think of neocortex as providing the newer (neo) functions of the temporal lobes seen in humans: speech, language, visual processing/social cues