it's a relatively low risk, not without risk, but
it's a relatively low risk, procedure compared to if
you went up into the vertebral column at a
place where you could actually puncture the spinal column.
That would actually never happen.
So that is the source of, what's called the lumbar puncture, but which
is known, I think, in, common parlance as a spinal tap.
So this is a spinal tap.
You're doing a spinal tap down here where there's no spinal
cord, but there's all these, all of, all of these roots.
The cauda equina.
So let's look at one more thing.
What's probably the most common, type of pain that we have?
Well, it would be, I think it would be,
a close, call between a headache and a backache.
They're both pretty common.
But backaches are really common.
What are backaches?
What, what happens?
Well, when the nerve comes out, it comes out from this, opening right here.
And this opening, in this individual, is pretty, pretty big.
But you can see, in this individual, there's much less of an opening.