Nerves 11- Cranial Nerve Review

Nerves 11- Cranial Nerve Review


– It’s time for a giant
cranial nerve review. Doesn’t that make you excited?
You better say yes. Here’s what the review
is going to look like. I’m going to draw my pons.
You getting the idea? I’m going to draw
my medulla oblongata. Look at that lovely
medulla oblongata. Now, I’m going to draw
my cranial nerves, and this time, I’m going to
color code everybody, and I’m going to color code it
by what kind of fibers are found in there. I’m going to then go back,
I’m going to do sensory, motor, or both, and then I’m going to
go back and mark the ones that carry
visceral motor fibers. Are you ready? Remember our little antenna
out here up front. That was
cranial nerve number one. Remember we had a nice little X
going on? That’s cranial nerve number two. And then we have–whoa,
I almost got so excited I did not change my color. We have two little fellows
coming out of the top of the pons, and this
is cranial nerve number three. All motor. Cranial nerve number
four is also a motor guy. Cranial nerve number five. Cranial nerve number five
is the big trigeminal. That was fast. Whoa.
Okay, something like that. And why did I make
three little arms? Fingers. Three fingers. Ah, three
fingers. That’s why I did it. Cranial nerve number–oops. I lost track of my numbering,
didn’t I? Four and five and six,
is also just motor. Just motor.
That guy is not cool. Seven.
What do you know about seven? Seven is definitely a both-er.
Seven is coming out here. Eight. Eight–oops.
Dang it, I did it again. Seven. Who was seven? Facial. Eight, vestibulocochlear. All sensory,
coming out about here. Nine. Nine is a both-er. Ten is a both-er. Look at me go. Nine, ten–are
you looking at me go? You’re like, dude, really,
please go. I know that’s not really
what you’re thinking. Who’s this? Oops. Dang it. Why did I erase number 11?
Because it has to be red. Number 11 is accessory.
Remember? Moving neck muscles because it
is all motor and it’s an accessorizer. Right? Do you feel totally
accessorized right now? And then, 12. 12 was hypoglossal, and that was
just doing tongue. Remember it comes back in here
and does that weird thing. There you go.
That’s a nice little picture. If you can visualize
all of your colors, you could totally rock
that picture right there. Are we finished? No, because we actually have
to also mark who is carrying
visceral motor fibers. And remember that was three, oculomotor,
makes your pupils constrict, facial,
makes you salivate and cry, glossopharyngeal,
makes you salivate, and vagus does everything else. Everything. Wow. Cranial nerves. Nerves. Holy nerves. You just did all
the spinal nerves, you did the all the plexuses, and you did all
the cranial nerves. That’s a lot of nerves. And now, the exciting thing is– I hope you feel excited right
now–the exciting thing is we can do pathways, and we have
highways to travel on. So we’re going to go out, we’re going to get
sensory information in, we’re going to be able
to process it, we know where we’re
going to process it in our central nervous system,
we can know the highway that we’re going to travel
to get out to make stuff happen out there. You guys are like pathway
nervous system rock stars, unless you think pop stars
are cooler and then you can be a pop star. I, on the other hand, am going
to go to bed now. Bye-bye.

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