00:00:0500:00:12
How many you guys know the spine pretty
00:00:0500:00:12
good, kind of. Alright so let's talk
00:00:1200:00:15
about how to memorize some of the details of the spine. You got
00:00:1500:00:21
this big curvy thing with a lot of bones 7, 12, and 5. How many guys have ever heard
00:00:2100:00:29
7, 12, and 5? How do you guys remember 7, 12, 5, breakfast, lunch, and dinner. If we still
00:00:2900:00:34
lived in the 1950s you guys would wake up and have breakfast at seven. We'd all
00:00:3400:00:39
get a lunch break at 12, and you'd come home to dinner at five right. Now you
00:00:3900:00:45
guys are students, and I work all the time all over the place, so when do we
00:00:4500:00:51
eat? Whenever we can shove food in our mouths. I think that's when we eat.
00:00:5100:00:59
But if we go back to 7, 12, and 5, so we have seven what type of vertebrate,
00:00:5900:01:03
cervical vertebrae. So those vertebrae in blue there, are seven cervical
00:01:0300:01:06
vertebrae. What's special about the cervical vertebrae, where do they exist?
00:01:0600:01:14
The neck, those are your neck vertebrae. Alright 12, 12 12 12 12 12 ,12 refers to
00:01:1400:01:21
which vertebrae? The thoracic vertebrae. So I have 12 thoracic vertebrae. What's
00:01:2100:01:30
special about my thoracic vertebrae? They attach to my 12 ribs, making up my
00:01:3000:01:41
thorax right, and lumbar is where your low back is, where I have how many
00:01:4100:01:49
vertebrae? Five. You want to know a fun fact, how nerdy I am, you guys ready for
00:01:4900:01:57
this? This 7, 12, 5 scheme same for all mammals, you guys are like that's fun
00:01:5700:02:06
fact. Now let me explain, let me explain. A giraffe still has seven cervical
00:02:0600:02:16
vertebrae, how ridiculous is that, they're just like this tall, that's no joke. Seven
00:02:1600:02:19
cervical vertebrae in a giraffe, and then you look at a shrew. You guys ever seen a
00:02:1900:02:24
shrew? The thing has no neck, somebody attached its head to its
00:02:2400:02:31
shoulders. There's still seven cervical vertebrae. Whales still have a 7, 12, 5
00:02:3100:02:38
scheme. Their sacrum and coccyx are separated, but they still have the same 7,
00:02:3800:02:46
12, 5. I was in I think it's the Chicago Airport, and there was a giant skeleton
00:02:4600:02:54
of a brontosaurus. Of course so what do i do, I stop but I start looking at it,
00:02:5400:02:57
people must think I'm freaking crazy at this point right, there like what the
00:02:5700:03:01
heck is he doing, and sure enough i'm sitting there counting, i'm going that son
00:03:0100:03:06
of a bugs got seven cervical vertebrae, and he had all the same landmarks too.
00:03:0600:03:10
Like it was crazy, like the same transverse process, spinous process, like
00:03:1000:03:14
I could still point to the lamina, and all of those fun little anatomical things
00:03:1400:03:20
about vertebrates they were still there. So 7, 12, 5 a little more interesting
00:03:2000:03:25
now? Or no, now you guys just think I'm that much more nerdy. Guys should know my
00:03:2500:03:32
friends call me Sheldon, that's totally true. Alright, so we got low back lumbar
00:03:3200:03:39
vertebrae. We also have curves to remember in your low back lumbar
00:03:3900:03:47
vertebrae, You have a lordotic curve. You guys with me, so make that
00:03:4700:03:55
little letter association. Low back is your lumbar spine, and you have a
00:03:5500:04:03
lordotic curve, that's the inward curve. Now the opposite of lordotic curve is a
00:04:0300:04:13
kyphotic curve. Where do we find a kyphotic curve? The thoracic spine has
00:04:1300:04:20
a kyphotic curve. So what type of curve does the cervical spine have? It's another
00:04:2000:04:25
lordotic curve. So you have lordotic, kyphotic, lordotic. If you remember it
00:04:2500:04:32
from the bottom up, low back, lumbar spine, lordotic curve, you're in good shape. Now
00:04:3200:04:36
let's see if we can do this without me, and going to the next slide.
00:04:3600:04:40
What are the joint actions of my spine?
00:04:4100:04:49
Flexion, extension of my sagittal plane motions. Lateral flexion is my frontal
00:04:4900:04:53
plane motion, and then what's my transverse plane motion at the spine?
00:04:5300:04:58
Rotation. You guys nailed it, nailed it.